WO2022124692A1 - Olefinic polymer, and method for preparing same - Google Patents

Olefinic polymer, and method for preparing same Download PDF

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WO2022124692A1
WO2022124692A1 PCT/KR2021/018071 KR2021018071W WO2022124692A1 WO 2022124692 A1 WO2022124692 A1 WO 2022124692A1 KR 2021018071 W KR2021018071 W KR 2021018071W WO 2022124692 A1 WO2022124692 A1 WO 2022124692A1
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formula
substituted
unsubstituted
transition metal
olefinic
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PCT/KR2021/018071
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French (fr)
Korean (ko)
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조지송
박정현
김성동
이문희
정의갑
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한화솔루션 주식회사
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Priority to EP21903738.9A priority Critical patent/EP4261236A1/en
Priority to JP2023534614A priority patent/JP2023553076A/en
Priority to US18/265,861 priority patent/US20240043588A1/en
Priority to CN202180082827.XA priority patent/CN116568714A/en
Publication of WO2022124692A1 publication Critical patent/WO2022124692A1/en

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    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/02—Ethene
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    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
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    • C08F210/14—Monomers containing five or more carbon atoms
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    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65904—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with another component of C08F4/64
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    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65908—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
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    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • C—CHEMISTRY; METALLURGY
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    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65925—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually non-bridged
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
    • C08F2500/08—Low density, i.e. < 0.91 g/cm3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
    • C08F2500/12—Melt flow index or melt flow ratio
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65916—Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer

Definitions

  • the present invention relates to an olefin-based polymer and a method for preparing the same. Specifically, the present invention relates to an olefin-based polymer having excellent melt strength and a method for producing the same.
  • a metallocene catalyst which is one of the catalysts used to polymerize olefins, is coordinated with a transition metal or a transition metal halogen compound with ligands such as cyclopentadienyl, indenyl, and cycloheptadienyl. As a bound compound, it has a sandwich structure in its basic form.
  • the active site metal component is dispersed on an inactive solid surface and thus the properties of the active site are not uniform, the metallocene catalyst has a uniform structure. Since it is a compound with The polymer polymerized with such a metallocene catalyst has a narrow molecular weight distribution, a uniform distribution of comonomers, and higher copolymerization activity than the Ziegler-Natta catalyst.
  • linear low-density polyethylene is prepared by copolymerizing ethylene and alpha-olefin at low pressure using a polymerization catalyst, and has a narrow molecular weight distribution and short chain branch (SCB) of a constant length. and generally do not have a long chain branch (LCB).
  • SCB short chain branch
  • Films made of linear low-density polyethylene have the characteristics of general polyethylene, high breaking strength and elongation, and excellent tear strength and impact strength. It is widely used in stretch films and overlap films, which are difficult to apply.
  • An object of the present invention is to provide an olefin-based polymer having excellent melt strength.
  • Another object of the present invention is to provide a method for preparing the above olefin-based polymer.
  • the density is 0.9 ⁇ 0.95 g / cm3;
  • Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min;
  • MFR melt flow ratio
  • an olefinic polymer having a maximum processing speed of 550 mm/s or more.
  • the olefin-based polymer has (1) a density of 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 570 mm/s or more.
  • MFR melt flow ratio
  • the olefin-based polymer comprises (1) a density of the olefin-based polymer of 0.915 to 0.942 g/cm 3 ; (2) a melt index of 0.5 to 3.5 g/10 min, measured at 190°C with a load of 2.16 kg; (3) an MFR of 20 to 50; (4) a melt tension of 60-100 mN at a processing speed of 350 mm/s; and (5) the maximum processing speed may be 570 to 800 mm/s.
  • the olefin-based polymer may include at least one first transition metal compound represented by Formula 1 below; And it can be prepared by polymerizing the olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by the formula (2) and the compound represented by the following formula (3).
  • M 1 and M 2 are different and each independently titanium (Ti), zirconium (Zr) or hafnium (Hf),
  • each X is independently halogen, C 1-20 alkyl, C 2-20 alkenyl, C 2-20 alkynyl, C 6-20 aryl, C 1-20 alkyl C 6-20 aryl, C 6-20 aryl C 1-20 alkyl or C 1-20 alkylamido;
  • R 1 to R 10 are each independently hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 2-20 alkenyl, substituted or unsubstituted C 6-20 aryl, substituted or unsubstituted C 1 -20 alkyl C 6-20 aryl, substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, substituted or unsubstituted C 1-20 heteroalkyl, substituted or unsubstituted C 3-20 heteroaryl, substituted or unsubstituted C 1-20 alkylamido, substituted or unsubstituted C 6-20 arylamido, substituted or unsubstituted C 1-20 alkylidene, or substituted or unsubstituted C 1-20 silyl , R 1 to R 10 may be each independently connected to adjacent groups to form a substituted or unsubstituted saturated or unsaturated C 4-20 ring.
  • M 1 and M 2 are different from each other and each is zirconium or hafnium
  • X is each halogen or C 1-20 alkyl
  • R 1 to R 10 may each be hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 1-20 alkenyl, or substituted or unsubstituted C 6-20 aryl.
  • M 1 may be hafnium
  • M 2 may be zirconium
  • X may be chlorine or methyl
  • the first transition metal compound is at least one of the transition metal compounds represented by Formulas 1-1 and 1-2 below
  • the second transition metal compound is represented by Formulas 2-1, 2-2 and It may be at least one of the transition metal compounds represented by 3-1.
  • Me is a methyl group.
  • the molar ratio of the first transition metal compound to the second transition metal compound ranges from 100:1 to 1:100.
  • the above catalyst may include at least one cocatalyst selected from the group consisting of a compound represented by Formula 4, a compound represented by Formula 5, and a compound represented by Formula 6 below.
  • n is an integer of 2 or more
  • R a is a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen
  • D is aluminum (Al) or boron (B), and R b , R c and R d are each independently a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen. Or a C 1-20 alkoxy group,
  • L is a neutral or cationic Lewis base
  • [LH] + and [L] + are a Bronsted acid
  • Z is a group 13 element
  • A is each independently substituted or unsubstituted C 6 It is a -20 aryl group or a substituted or unsubstituted C 1-20 alkyl group.
  • the above catalyst may further include a carrier supporting a transition metal compound, a cocatalyst compound, or both.
  • the gastric carrier may include at least one selected from the group consisting of silica, alumina and magnesia.
  • the total amount of the hybrid transition metal compound supported on the carrier is 0.001 to 1 mmole based on 1 g of the carrier, and the total amount of the cocatalyst compound supported on the carrier is 2 to 15 mmole based on 1 g of the carrier.
  • the olefinic polymer is a copolymer of an olefinic monomer and an olefinic comonomer.
  • the olefinic monomer is ethylene
  • the olefinic comonomer is propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1 - It may be at least one selected from the group consisting of undecene, 1-dodecene, 1-tetradecene and 1-hexadecene.
  • the olefinic polymer is a linear low density polyethylene wherein the olefinic monomer is ethylene and the olefinic comonomer is 1-hexene.
  • the density of the olefin-based polymer is 0.9 ⁇ 0.95 g / cm3;
  • Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.5 to 1.5 g/10 min;
  • the polymerization of the olefinic monomer may be carried out by gas phase polymerization, and specifically, the polymerization of the olefinic monomer may be carried out in a gas phase fluidized bed reactor.
  • the olefin-based polymer according to an embodiment of the present invention has excellent melt strength and thus excellent bubble stability during blown film molding.
  • FIG. 1 is a graph showing the melt strength with respect to the maximum processing speed of the olefinic polymers of Examples 1 and 2 and Comparative Example 1.
  • FIG. 1 is a graph showing the melt strength with respect to the maximum processing speed of the olefinic polymers of Examples 1 and 2 and Comparative Example 1.
  • the density is 0.9 ⁇ 0.95 g / cm3;
  • Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min;
  • MFR melt flow ratio
  • the olefin-based polymer has (1) a density of 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 570 mm/s or more.
  • MFR melt flow ratio
  • the olefin-based polymer comprises (1) a density of the olefin-based polymer of 0.915 to 0.942 g/cm 3 ; (2) a melt index of 0.5 to 3.5 g/10 min, measured at 190°C with a load of 2.16 kg; (3) an MFR of 20 to 50; (4) a melt tension of 60-100 mN at a processing speed of 350 mm/s; and (5) the maximum processing speed may be 570 to 800 mm/s.
  • the olefinic polymer has a density of 0.9-0.95 g/cm 3 .
  • the density of the olefin-based polymer may be 0.91 to 0.945 g/cm 3 , 0.915 to 0.945 g/cm 3 , 0.91 to 0.93 g/cm 3 , 0.915 to 0.942 g/cm 3 or 0.915 to 0.925 g/cm 3 .
  • the olefin-based polymer has a melt index (I 2.16 ) of 0.1 to 5.0 g/10 min, measured at 190° C. under a load of 2.16 kg.
  • the melt index of the olefin-based polymer measured at 190° C. under a load of 2.16 kg may be 0.3 to 4.0 g/10 min, 0.5 to 3.5 g/10 min, or 0.5 to 3.0 g/10 min.
  • the olefin-based polymer has a melt flow ratio (MFR) of a melt index (I 21.6 ) measured at 190° C. under a load of 21.6 kg and a melt index (I 2.16 ) measured at a load of 2.16 kg more than 20
  • MFR melt flow ratio
  • I 21.6 melt index measured at 190° C. under a load of 21.6 kg
  • I 2.16 melt index measured at a load of 2.16 kg more than 20
  • the MFR of the olefin-based polymer may be 22 or more or 20-50.
  • the olefinic polymer has a melt tension of at least 55 mN at a processing speed of 350 mm/s.
  • the melt tension of the olefin-based polymer at a processing speed of 350 mm/s may be 60 mN or more or 60-100 mN.
  • Melt strength is a measure of the melt strength of an olefin-based polymer, and the higher the melt strength, the better the bubble stability, which is a property of maintaining the shape of the film without shaking when manufacturing a blown film with the olefin polymer.
  • the olefinic polymer has a velocity at break of at least 550 mm/s.
  • the maximum processing speed of the olefin-based polymer may be 570 mm/s or more or 570 to 800 mm/s. The higher the maximum processing speed, the higher the film extrusion processing linear speed can be, thereby increasing the film production.
  • the olefin-based polymer according to an embodiment of the present invention includes at least one first transition metal compound represented by Formula 1 below; And it is prepared by polymerizing an olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by Formula 2 below and the compound represented by Formula 3 below.
  • M 1 and M 2 are different from each other and each independently represent titanium (Ti), zirconium (Zr), or hafnium (Hf).
  • M 1 and M 2 may be different from each other and may be zirconium or hafnium, respectively.
  • M 1 may be hafnium and M 2 may be zirconium.
  • each X is independently halogen, C 1-20 alkyl, C 2-20 alkenyl, C 2-20 alkynyl, C 6-20 aryl, C 1-20 alkyl C 6-20 aryl, C 6-20 aryl C 1-20 alkyl, C 1-20 alkylamido or C 6-20 arylamido.
  • each X may be halogen or C 1-20 alkyl.
  • X may be chlorine or methyl.
  • R 1 to R 10 are each independently hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 2-20 alkenyl, substituted or unsubstituted C 6-20 aryl, substituted or unsubstituted C 1 -20 alkyl C 6-20 aryl, substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, substituted or unsubstituted C 1-20 heteroalkyl, substituted or unsubstituted C 3-20 heteroaryl, substituted or unsubstituted C 1-20 alkylamido, substituted or unsubstituted C 6-20 arylamido, substituted or unsubstituted C 1-20 alkylidene, or substituted or unsubstituted C 1-20 silyl , where R 1 to R 10 may be each independently connected to adjacent groups to form a substituted or unsubstituted saturated or unsaturated C 4-20 ring. Specifically, R 1 to R
  • M 1 and M 2 are different from each other and each is zirconium or hafnium
  • X is each halogen or C 1-20 alkyl
  • R 1 to R 10 may each be hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 1-20 alkenyl, or substituted or unsubstituted C 6-20 aryl.
  • M 1 may be hafnium
  • M 2 may be zirconium
  • X may be chlorine or methyl
  • the first transition metal compound is at least one of the transition metal compounds represented by Formulas 1-1 and 1-2 below
  • the second transition metal compound is represented by Formulas 2-1, 2-2 and It may be at least one of the transition metal compounds represented by 3-1.
  • Me is a methyl group.
  • the molar ratio of the first transition metal compound to the second transition metal compound ranges from 100:1 to 1:100.
  • the molar ratio of the first transition metal compound to the second transition metal compound is in the range of 50:1 to 1:50.
  • the molar ratio of the first transition metal compound to the second transition metal compound is in the range of 10:1 to 1:10.
  • the above catalyst may include at least one cocatalyst compound selected from the group consisting of a compound represented by Formula 4 below, a compound represented by Formula 5, and a compound represented by Formula 6 below. .
  • n is an integer of 2 or more
  • R a may be a halogen atom, a C 1-20 hydrocarbon, or a halogen-substituted C 1-20 hydrocarbon.
  • R a may be methyl, ethyl, n -butyl or isobutyl.
  • D is aluminum (Al) or boron (B), and R b , R c and R d are each independently a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen. or a C 1-20 alkoxy group.
  • R b , R c and R d may each independently be methyl or isobutyl
  • D is boron (B)
  • R b , R c and R d are each may be pentafluorophenyl.
  • L is a neutral or cationic Lewis base
  • [LH] + and [L] + are a Bronsted acid
  • Z is a group 13 element
  • A is each independently substituted or unsubstituted C 6 It is a -20 aryl group or a substituted or unsubstituted C 1-20 alkyl group.
  • [LH] + may be a dimethylanilinium cation
  • [Z(A) 4 ] - may be [B(C 6 F 5 ) 4 ] -
  • [L] + may be [(C 6 H) 5 ) 3 C] + .
  • examples of the compound represented by the above formula (4) include methylaluminoxane, ethylaluminoxane, isobutylaluminoxane, butylaluminoxane, and the like, and methylaluminoxane is preferred, but is not limited thereto.
  • Examples of the compound represented by the above formula (5) include trimethylaluminum, triethylaluminum, triisobutylaluminum, tripropylaluminum, tributylaluminum, dimethylchloroaluminum, triisopropylaluminum, tri- s -butylaluminum, tricyclopentylaluminum , tripentyl aluminum, triisopentyl aluminum, trihexyl aluminum, trioctyl aluminum, ethyl dimethyl aluminum, methyldiethyl aluminum, triphenyl aluminum, tri- p -tolyl aluminum, dimethyl aluminum methoxide, dimethyl aluminum ethoxide, trimethyl boron, triethylboron, triisobutylboron, tripropylboron, tributylboron, and the like, and trimethylaluminum, triethylaluminum and triisobutylaluminum are preferred, but are not limited there
  • Examples of the compound represented by the above formula (6) include triethylammonium tetraphenylboron, tributylammonium tetraphenylboron, trimethylammonium tetraphenylboron, tripropylammonium tetraphenylboron, trimethylammonium tetra( p -tolyl) Boron, trimethylammonium tetra( o , p -dimethylphenyl)boron, tributylammonium tetra( p -trifluoromethylphenyl)boron, trimethylammonium tetra( p -trifluoromethylphenyl)boron, tributylammonium tetra Pentafluorophenyl boron, N,N-diethylanilinium tetraphenylboron, N,N-diethylaniliniumtetrapentafluorophenylboron
  • the above catalyst may further include a carrier supporting a transition metal compound, a cocatalyst compound, or both.
  • the carrier may support both the transition metal compound and the promoter compound.
  • the carrier may include a material containing a hydroxyl group on the surface, preferably a material having a high reactivity hydroxyl group and a siloxane group, which is dried to remove moisture from the surface, may be used.
  • the carrier may include at least one selected from the group consisting of silica, alumina and magnesia. Specifically, silica dried at a high temperature, silica-alumina, silica-magnesia, and the like may be used as the carrier, and these are typically oxides such as Na 2 O, K 2 CO 3 , BaSO 4 , and Mg(NO 3 ) 2 . , carbonate, sulfate, and nitrate components. They may also contain carbon, zeolites, magnesium chloride, and the like.
  • the carrier is not limited thereto, and is not particularly limited as long as it can support the transition metal compound and the promoter compound.
  • the carrier may have an average particle size of 10-250 ⁇ m, preferably an average particle size of 10-150 ⁇ m, and more preferably 20-100 ⁇ m.
  • the micropore volume of the carrier may be 0.1-10 cc/g, preferably 0.5-5 cc/g, and more preferably 1.0-3.0 cc/g.
  • the specific surface area of the carrier may be 1 to 1,000 m2/g, preferably 100 to 800 m2/g, and more preferably 200 to 600 m2/g.
  • the carrier may be silica.
  • the silica may have a drying temperature of 200 to 900°C.
  • the drying temperature may be preferably 300 to 800°C, more preferably 400 to 700°C. If the drying temperature is less than 200 °C, there is too much moisture, the surface moisture and the cocatalyst compound react, and if it exceeds 900 °C, the structure of the carrier may be collapsed.
  • the concentration of hydroxyl groups in the dried silica may be 0.1-5 mmole/g, preferably 0.7-4 mmole/g, and more preferably 1.0-2 mmole/g.
  • the hydroxyl group concentration is less than 0.1 mmole/g, the supported amount of the first cocatalyst compound is lowered, and when it exceeds 5 mmole/g, a problem in that the catalyst component is deactivated may occur.
  • the total amount of the transition metal compound supported on the carrier may be 0.001 to 1 mmole based on 1 g of the carrier.
  • the total amount of the promoter compound supported on the carrier may be 2 to 15 mmole based on 1 g of the carrier.
  • One type or two or more types of carriers may be used.
  • both the transition metal compound and the promoter compound may be supported on one type of support, or the transition metal compound and the promoter compound may be supported on two or more types of support, respectively.
  • only one of the transition metal compound and the promoter compound may be supported on the carrier.
  • a physical adsorption method or a chemical adsorption method may be used as a method of supporting a transition metal compound and/or a cocatalyst compound that can be used in a catalyst for olefin polymerization.
  • the physical adsorption method is a method of drying a solution in which a transition metal compound is dissolved in contact with a carrier, a method in which a solution in which a transition metal compound and a cocatalyst compound are dissolved, is contacted with a carrier and then drying, or a transition metal compound
  • the dissolved solution was brought into contact with the carrier and dried to prepare a carrier on which the transition metal compound was supported.
  • the solution in which the cocatalyst compound was dissolved was contacted with the carrier and dried to prepare a carrier on which the cocatalyst compound was supported. After that, it may be a method of mixing them, or the like.
  • the chemical adsorption method is a method in which a promoter compound is first supported on the surface of a carrier, and then a transition metal compound is supported on the promoter compound, or a functional group on the surface of the support (for example, in the case of silica, a hydroxyl group on the silica surface (-OH) )) and a method of covalently bonding the catalyst compound and the like.
  • the olefin-based polymer may be a homopolymer of an olefin-based monomer or a copolymer of an olefin-based monomer and a comonomer.
  • the olefinic polymer is a copolymer of an olefinic monomer and an olefinic comonomer.
  • the olefinic monomer is C 2-20 alpha-olefin ( ⁇ -olefin), C 1-20 diolefin (diolefin), C 3-20 cycloolefin and C 3-20 cyclodiolefin. At least one selected from the group consisting of.
  • the olefinic monomer is ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1 - may be dodecene, 1-tetradecene, or 1-hexadecene, and the olefinic polymer may be a homopolymer including only one type of the olefinic monomer exemplified above, or a copolymer including two or more types.
  • the olefin-based polymer may be a copolymer in which ethylene and C 3-20 alpha-olefin are copolymerized.
  • the olefinic polymer may be a linear low density polyethylene wherein the olefinic monomer is ethylene and the olefinic comonomer is 1-hexene.
  • the content of ethylene is 55 to 99.9 weight%, and it is more preferable that it is 90 to 99.9 weight%.
  • the content of the alpha-olefin-based comonomer is preferably 0.1 to 45% by weight, more preferably 0.1 to 10% by weight.
  • At least one first transition metal compound represented by the following formula (1) And obtaining an olefinic polymer by polymerizing an olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by Formula 2 below and the compound represented by Formula 3 below
  • a method for producing an olefin-based polymer is provided.
  • M 1 , M 2 , X and R 1 to R 10 are the same as described in the above olefin-based polymer.
  • the olefin-based polymer prepared by the manufacturing method according to an embodiment of the present invention has (1) a density of 0.9 to 0.95 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 550 mm/s or more.
  • MFR melt flow ratio
  • the olefin-based polymer has (1) a density of 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 570 mm/s or more.
  • MFR melt flow ratio
  • the olefin-based polymer comprises (1) a density of the olefin-based polymer of 0.915 to 0.942 g/cm 3 ; (2) a melt index of 0.5 to 3.5 g/10 min, measured at 190°C with a load of 2.16 kg; (3) an MFR of 20 to 50; (4) a melt tension of 60-100 mN at a processing speed of 350 mm/s; and (5) the maximum processing speed may be 570 to 800 mm/s.
  • the olefin-based polymer may be polymerized by, for example, a polymerization reaction such as free radical, cationic, coordination, condensation, and addition. However, it is not limited thereto.
  • the olefin-based polymer may be prepared by a gas phase polymerization method, a solution polymerization method, or a slurry polymerization method.
  • the polymerization of the olefinic monomer may be carried out by gas phase polymerization, and specifically, the polymerization of the olefinic monomer may be carried out in a gas phase fluidized bed reactor.
  • examples of the solvent that can be used include a C 5-12 aliphatic hydrocarbon solvent such as pentane, hexane, heptane, nonane, decane and isomers thereof; aromatic hydrocarbon solvents such as toluene and benzene; hydrocarbon solvents substituted with chlorine atoms such as dichloromethane and chlorobenzene; and mixtures thereof, but is not limited thereto.
  • a C 5-12 aliphatic hydrocarbon solvent such as pentane, hexane, heptane, nonane, decane and isomers thereof
  • aromatic hydrocarbon solvents such as toluene and benzene
  • hydrocarbon solvents substituted with chlorine atoms such as dichloromethane and chlorobenzene
  • mixtures thereof but is not limited thereto.
  • transition metal compound of Formula 1-1 bis(n-propylcyclopentadienyl) hafnium dichloride
  • transition metal compound of Formula 2-1 bis(n-butylcyclopentadienyl) zirconium dichloride
  • An ethylene/1-hexene copolymer was prepared in the presence of the supported catalyst obtained in Preparation Example 1 using a gas phase fluidized bed reactor.
  • the partial pressure of ethylene in the reactor was maintained at about 15 kg/cm 2 , and the polymerization temperature was maintained at 70-90°C.
  • Example 1 Example 2 Polymerization temperature (°C) 75.4 80.9 Catalyst injection amount (g/h) 2.0 1.4 Hydrogen injection amount (g/h) 2.22 2.34 1-Hexene Injection (kg/h) 1.60 1.63 Hydrogen/Ethylene Concentration (%) Ratio 0.047 0.048 1-Hexene/Ethylene Concentration (%) Ratio 2.096 1.993
  • the melt index was measured at 190°C under a load of 21.6 kg and a load of 2.16 kg, and the ratio (MI 21.6 /MI 2.16 ) was obtained.
  • Melt tension and maximum machining speed were measured through a capillary with a length of 30 mm, a diameter of 2 mm, a shear rate of 72/s and/or a wheel with an initial rate of 18 mm/s and an acceleration of 12 mm/s 2 . measured.
  • Example 1 Example 2 Comparative Example 1 MI 2.16 g/10 min 0.94 0.94 1.07 MI 21.16 g/10 min 22.2 21.0 30.9 MFR - 23.6 22.3 28.9 density g/cm3 0.9188 0.9200 0.9200 melt tension (350 mm/s) mN 61.6 62.3 51.8 maximum machining speed mm/s 580 572 524
  • the olefin-based polymer according to an embodiment of the present invention has excellent melt strength represented by melt tension and maximum processing speed, and thus has excellent bubble stability during blown film molding.
  • the present invention can provide an olefin-based polymer having excellent melt strength.

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Abstract

The present invention relates to an olefinic polymer, and a method for preparing same. The olefinic polymer according to an embodiment of the present invention has excellent melt strength, and thus has excellent bubble stability during blown film molding.

Description

올레핀계 중합체 및 그 제조방법Olefin-based polymer and its manufacturing method
본 발명은 올레핀계 중합체 및 그 제조방법에 관한 것이다. 구체적으로, 본 발명은 우수한 용융강도를 갖는 올레핀계 중합체 및 그 제조방법에 관한 것이다.The present invention relates to an olefin-based polymer and a method for preparing the same. Specifically, the present invention relates to an olefin-based polymer having excellent melt strength and a method for producing the same.
올레핀을 중합하는 데 이용되는 촉매의 하나인 메탈로센 촉매는 전이금속 또는 전이금속 할로겐 화합물에 사이클로펜타디에닐(cyclopentadienyl), 인데닐(indenyl), 사이클로헵타디에닐(cycloheptadienyl) 등의 리간드가 배위 결합된 화합물로서 샌드위치 구조를 기본적인 형태로 갖는다.A metallocene catalyst, which is one of the catalysts used to polymerize olefins, is coordinated with a transition metal or a transition metal halogen compound with ligands such as cyclopentadienyl, indenyl, and cycloheptadienyl. As a bound compound, it has a sandwich structure in its basic form.
올레핀을 중합하는 데 사용되는 다른 촉매인 지글러-나타(Ziegler-Natta) 촉매가 활성점인 금속 성분이 불활성인 고체 표면에 분산되어 활성점의 성질이 균일하지 않은데 반해, 메탈로센 촉매는 일정한 구조를 갖는 하나의 화합물이기 때문에 모든 활성점이 동일한 중합 특성을 갖는 단일 활성점 촉매(single-site catalyst)로 알려져 있다. 이러한 메탈로센 촉매로 중합된 고분자는 분자량 분포가 좁고 공단량체의 분포가 균일하며, 지글러-나타 촉매에 비해 공중합 활성도가 높다.In contrast to the Ziegler-Natta catalyst, which is another catalyst used to polymerize olefins, the active site metal component is dispersed on an inactive solid surface and thus the properties of the active site are not uniform, the metallocene catalyst has a uniform structure. Since it is a compound with The polymer polymerized with such a metallocene catalyst has a narrow molecular weight distribution, a uniform distribution of comonomers, and higher copolymerization activity than the Ziegler-Natta catalyst.
한편, 선형 저밀도 폴리에틸렌(linear low-density polyethylene; LLDPE)은 중합 촉매를 사용하여 저압에서 에틸렌과 알파-올레핀을 공중합하여 제조되며, 분자량 분포가 좁고 일정한 길이의 단쇄 분지(short chain branch; SCB)를 가지며, 일반적으로 장쇄 분지(long chain branch; LCB)를 갖지 않는다. 선형 저밀도 폴리에틸렌으로 제조된 필름은 일반 폴리에틸렌의 특성과 더불어 파단강도와 신율이 높고, 인열강도, 충격강도 등이 우수하여 기존의 저밀도 폴리에틸렌(low-density polyethylene)이나 고밀도 폴리에틸렌(high-density polyethylene)의 적용이 어려운 스트레치 필름, 오버랩 필름 등에 널리 사용되고 있다.On the other hand, linear low-density polyethylene (LLDPE) is prepared by copolymerizing ethylene and alpha-olefin at low pressure using a polymerization catalyst, and has a narrow molecular weight distribution and short chain branch (SCB) of a constant length. and generally do not have a long chain branch (LCB). Films made of linear low-density polyethylene have the characteristics of general polyethylene, high breaking strength and elongation, and excellent tear strength and impact strength. It is widely used in stretch films and overlap films, which are difficult to apply.
그런데, 메탈로센 촉매에 의해 제조되는 올레핀계 중합체를 블로운 필름(blown film)으로 성형하기 위해서는 우수한 용융강도(melt strength)가 요구된다.However, in order to form the olefin-based polymer prepared by the metallocene catalyst into a blown film, excellent melt strength is required.
본 발명의 목적은 용융강도가 우수한 올레핀계 중합체를 제공하는 것이다.An object of the present invention is to provide an olefin-based polymer having excellent melt strength.
본 발명의 다른 목적은 위 올레핀계 중합체의 제조방법을 제공하는 것이다.Another object of the present invention is to provide a method for preparing the above olefin-based polymer.
본 발명의 일 구현예에 따라서, (1) 밀도가 0.9~0.95 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 55 mN 이상; 및 (5) 최대 가공 속도가 550 ㎜/s 이상인 올레핀계 중합체가 제공된다.According to one embodiment of the present invention, (1) the density is 0.9 ~ 0.95 g / ㎤; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) an olefinic polymer having a maximum processing speed of 550 mm/s or more.
본 발명의 구체예에서, 올레핀계 중합체는 (1) 밀도가 0.915~0.945 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60 mN 이상; 및 (5) 최대 가공 속도가 570 ㎜/s 이상일 수 있다.In an embodiment of the present invention, the olefin-based polymer has (1) a density of 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 570 mm/s or more.
본 발명의 바람직한 구체예에서, 올레핀계 중합체는 (1) 올레핀계 중합체의 밀도가 0.915~0.942 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수가 0.5~3.5 g/10분; (3) MFR이 20~50; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60~100 mN; 및 (5) 최대 가공 속도가 570~800 ㎜/s일 수 있다.In a preferred embodiment of the present invention, the olefin-based polymer comprises (1) a density of the olefin-based polymer of 0.915 to 0.942 g/cm 3 ; (2) a melt index of 0.5 to 3.5 g/10 min, measured at 190°C with a load of 2.16 kg; (3) an MFR of 20 to 50; (4) a melt tension of 60-100 mN at a processing speed of 350 mm/s; and (5) the maximum processing speed may be 570 to 800 mm/s.
본 발명의 구체예에서, 위 올레핀계 중합체는 아래 화학식 1로 표시되는 적어도 1종의 제1 전이금속 화합물; 및 아래 화학식 2로 표시되는 화합물과 아래 화학식 3으로 표시되는 화합물 중에서 선택되는 적어도 1종의 제2 전이금속 화합물을 포함하는 혼성 촉매의 존재하에 올레핀계 단량체를 중합하여 제조될 수 있다.In an embodiment of the present invention, the olefin-based polymer may include at least one first transition metal compound represented by Formula 1 below; And it can be prepared by polymerizing the olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by the formula (2) and the compound represented by the following formula (3).
[화학식 1][Formula 1]
Figure PCTKR2021018071-appb-img-000001
Figure PCTKR2021018071-appb-img-000001
[화학식 2][Formula 2]
Figure PCTKR2021018071-appb-img-000002
Figure PCTKR2021018071-appb-img-000002
[화학식 3][Formula 3]
Figure PCTKR2021018071-appb-img-000003
Figure PCTKR2021018071-appb-img-000003
위 화학식 1 내지 화학식 3에서, M1과 M2는 서로 다르면서 각각 독립적으로 티타늄(Ti), 지르코늄(Zr) 또는 하프늄(Hf)이고,In Chemical Formulas 1 to 3, M 1 and M 2 are different and each independently titanium (Ti), zirconium (Zr) or hafnium (Hf),
X는 각각 독립적으로 할로겐, C1-20 알킬, C2-20 알케닐, C2-20 알키닐, C6-20 아릴, C1-20 알킬 C6-20 아릴, C6-20 아릴 C1-20 알킬 또는 C1-20 알킬아미도이고,each X is independently halogen, C 1-20 alkyl, C 2-20 alkenyl, C 2-20 alkynyl, C 6-20 aryl, C 1-20 alkyl C 6-20 aryl, C 6-20 aryl C 1-20 alkyl or C 1-20 alkylamido;
R1 내지 R10은 각각 독립적으로 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C2-20 알케닐, 치환 또는 비치환된 C6-20 아릴, 치환 또는 비치환된 C1-20 알킬 C6-20 아릴, 치환 또는 비치환된 C6-20 아릴 C1-20 알킬, 치환 또는 비치환된 C1-20 헤테로알킬, 치환 또는 비치환된 C3-20 헤테로아릴, 치환 또는 비치환된 C1-20 알킬아미도, 치환 또는 비치환된 C6-20 아릴아미도, 치환 또는 비치환된 C1-20 알킬리덴, 또는 치환 또는 비치환된 C1-20 실릴이되, R1 내지 R10은 각각 독립적으로 인접한 기가 연결되어 치환 또는 비치환된 포화 또는 불포화 C4-20 고리를 형성할 수 있다.R 1 to R 10 are each independently hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 2-20 alkenyl, substituted or unsubstituted C 6-20 aryl, substituted or unsubstituted C 1 -20 alkyl C 6-20 aryl, substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, substituted or unsubstituted C 1-20 heteroalkyl, substituted or unsubstituted C 3-20 heteroaryl, substituted or unsubstituted C 1-20 alkylamido, substituted or unsubstituted C 6-20 arylamido, substituted or unsubstituted C 1-20 alkylidene, or substituted or unsubstituted C 1-20 silyl , R 1 to R 10 may be each independently connected to adjacent groups to form a substituted or unsubstituted saturated or unsaturated C 4-20 ring.
본 발명의 구체예에서, M1과 M2는 서로 다르면서 각각 지르코늄 또는 하프늄이고, X는 각각 할로겐 또는 C1-20 알킬이고, R1 내지 R10은 각각 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C1-20 알케닐, 또는 치환 또는 비치환된 C6-20 아릴일 수 있다.In an embodiment of the present invention, M 1 and M 2 are different from each other and each is zirconium or hafnium, X is each halogen or C 1-20 alkyl, and R 1 to R 10 may each be hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 1-20 alkenyl, or substituted or unsubstituted C 6-20 aryl.
본 발명의 바람직한 구체예에서, M1이 하프늄이고, M2가 지르코늄이고, X가 염소 또는 메틸일 수 있다.In a preferred embodiment of the present invention, M 1 may be hafnium, M 2 may be zirconium and X may be chlorine or methyl.
본 발명의 바람직한 구체예에서, 제1 전이금속 화합물이 아래 화학식 1-1 및 1-2로 표시되는 전이금속 화합물 중 적어도 하나이고, 제2 전이금속 화합물이 아래 화학식 2-1, 2-2 및 3-1로 표시되는 전이금속 화합물 중 적어도 하나일 수 있다.In a preferred embodiment of the present invention, the first transition metal compound is at least one of the transition metal compounds represented by Formulas 1-1 and 1-2 below, and the second transition metal compound is represented by Formulas 2-1, 2-2 and It may be at least one of the transition metal compounds represented by 3-1.
[화학식 1-1] [화학식 1-2][Formula 1-1] [Formula 1-2]
Figure PCTKR2021018071-appb-img-000004
Figure PCTKR2021018071-appb-img-000005
Figure PCTKR2021018071-appb-img-000004
Figure PCTKR2021018071-appb-img-000005
[화학식 2-1] [화학식 2-2] [화학식 3-1][Formula 2-1] [Formula 2-2] [Formula 3-1]
Figure PCTKR2021018071-appb-img-000006
Figure PCTKR2021018071-appb-img-000007
Figure PCTKR2021018071-appb-img-000008
Figure PCTKR2021018071-appb-img-000006
Figure PCTKR2021018071-appb-img-000007
Figure PCTKR2021018071-appb-img-000008
위 화학식에서, Me는 메틸기이다.In the above formula, Me is a methyl group.
본 발명의 구체예에서, 제1 전이금속 화합물 대 제2 전이금속 화합물의 몰 비가 100:1~1:100의 범위이다.In an embodiment of the present invention, the molar ratio of the first transition metal compound to the second transition metal compound ranges from 100:1 to 1:100.
본 발명의 구체예에서, 위 촉매가 아래 화학식 4로 표현되는 화합물, 화학식 5로 표현되는 화합물 및 화학식 6으로 표현되는 화합물로 구성되는 군으로부터 선택되는 적어도 1종의 조촉매를 포함할 수 있다.In an embodiment of the present invention, the above catalyst may include at least one cocatalyst selected from the group consisting of a compound represented by Formula 4, a compound represented by Formula 5, and a compound represented by Formula 6 below.
[화학식 4][Formula 4]
Figure PCTKR2021018071-appb-img-000009
Figure PCTKR2021018071-appb-img-000009
[화학식 5][Formula 5]
Figure PCTKR2021018071-appb-img-000010
Figure PCTKR2021018071-appb-img-000010
[화학식 6][Formula 6]
[L-H]+[Z(A)4]- 또는 [L]+[Z(A)4]- [LH] + [Z(A) 4 ] - or [L] + [Z(A) 4 ] -
위 화학식 4에서, n은 2 이상의 정수이고, Ra는 할로겐 원자, C1-20 탄화수소기 또는 할로겐으로 치환된 C1-20 탄화수소기이고,In the above formula (4), n is an integer of 2 or more, R a is a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen,
위 화학식 5에서, D는 알루미늄(Al) 또는 보론(B)이고, Rb, Rc 및 Rd는 각각 독립적으로 할로겐 원자, C1-20 탄화수소기, 할로겐으로 치환된 C1-20 탄화수소기 또는 C1-20 알콕시기이며,In Formula 5 above, D is aluminum (Al) or boron (B), and R b , R c and R d are each independently a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen. Or a C 1-20 alkoxy group,
위 화학식 6에서, L은 중성 또는 양이온성 루이스 염기이고, [L-H]+ 및 [L]+는 브뢴스테드 산이며, Z는 13족 원소이고, A는 각각 독립적으로 치환 또는 비치환된 C6-20 아릴기이거나 치환 또는 비치환된 C1-20 알킬기이다.In the above formula (6), L is a neutral or cationic Lewis base, [LH] + and [L] + are a Bronsted acid, Z is a group 13 element, A is each independently substituted or unsubstituted C 6 It is a -20 aryl group or a substituted or unsubstituted C 1-20 alkyl group.
본 발명의 구체예에서, 위 촉매가 전이금속 화합물, 조촉매 화합물 또는 둘 다를 담지하는 담체를 더 포함할 수 있다.In an embodiment of the present invention, the above catalyst may further include a carrier supporting a transition metal compound, a cocatalyst compound, or both.
본 발명의 바람직한 구체예에서, 위 담체는 실리카, 알루미나 및 마그네시아로 구성되는 군으로부터 선택되는 적어도 하나를 포함할 수 있다.In a preferred embodiment of the present invention, the gastric carrier may include at least one selected from the group consisting of silica, alumina and magnesia.
여기서, 담체에 담지되는 혼성 전이금속 화합물의 총량이 담체 1 g을 기준으로 0.001~1 mmole이고, 담체에 담지되는 조촉매 화합물의 총량이 담체 1 g을 기준으로 2~15 mmole이다.Here, the total amount of the hybrid transition metal compound supported on the carrier is 0.001 to 1 mmole based on 1 g of the carrier, and the total amount of the cocatalyst compound supported on the carrier is 2 to 15 mmole based on 1 g of the carrier.
본 발명의 구체예에서, 올레핀계 중합체가 올레핀계 단량체와 올레핀계 공단량체의 공중합체이다. 구체적으로, 올레핀계 단량체가 에틸렌이고, 올레핀계 공단량체가 프로필렌, 1-부텐, 1-펜텐, 4-메틸-1-펜텐, 1-헥센, 1-헵텐, 1-옥텐, 1-데센, 1-운데센, 1-도데센, 1-테트라데센 및 1-헥사데센으로 구성되는 군으로부터 선택되는 적어도 하나일 수 있다. 바람직하게는, 올레핀계 중합체는 올레핀계 단량체가 에틸렌이고 올레핀계 공단량체가 1-헥센인 선형 저밀도 폴리에틸렌이다.In an embodiment of the present invention, the olefinic polymer is a copolymer of an olefinic monomer and an olefinic comonomer. Specifically, the olefinic monomer is ethylene, and the olefinic comonomer is propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1 - It may be at least one selected from the group consisting of undecene, 1-dodecene, 1-tetradecene and 1-hexadecene. Preferably, the olefinic polymer is a linear low density polyethylene wherein the olefinic monomer is ethylene and the olefinic comonomer is 1-hexene.
본 발명의 일 구현예에 따라서, 위 화학식 1로 표시되는 적어도 1종의 제1 전이금속 화합물; 및 위 화학식 2로 표시되는 화합물과 위 화학식 3으로 표시되는 화합물 중에서 선택되는 적어도 1종의 제2 전이금속 화합물을 포함하는 혼성 촉매의 존재하에 올레핀계 단량체를 중합하여 올레핀계 중합체를 얻는 단계를 포함하되, 올레핀계 중합체의 (1) 밀도가 0.9~0.95 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.5~1.5 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 55 mN 이상; 및 (5) 최대 가공 속도가 550 ㎜/s 이상인 올레핀계 중합체의 제조방법이 제공된다.According to one embodiment of the present invention, at least one first transition metal compound represented by Formula 1 above; and polymerizing the olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by Formula 2 and the compound represented by Formula 3 to obtain an olefinic polymer However, (1) the density of the olefin-based polymer is 0.9 ~ 0.95 g / ㎤; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.5 to 1.5 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) a method for producing an olefin-based polymer having a maximum processing speed of 550 mm/s or more.
본 발명의 구체예에서, 올레핀계 단량체의 중합이 기상 중합으로 수행될 수 있으며, 구체적으로 올레핀계 단량체의 중합이 기상 유동층 반응기 내에서 수행될 수 있다.In an embodiment of the present invention, the polymerization of the olefinic monomer may be carried out by gas phase polymerization, and specifically, the polymerization of the olefinic monomer may be carried out in a gas phase fluidized bed reactor.
본 발명의 구현예에 따른 올레핀계 중합체는 용융강도가 우수하여 블로운 필름 성형 시 버블 안정성이 뛰어나다.The olefin-based polymer according to an embodiment of the present invention has excellent melt strength and thus excellent bubble stability during blown film molding.
도 1은 실시예 1과 2 및 비교예 1의 올레핀계 중합체의 최대 가공 속도에 대한 용융강도를 나타낸 그래프이다.1 is a graph showing the melt strength with respect to the maximum processing speed of the olefinic polymers of Examples 1 and 2 and Comparative Example 1. FIG.
이하, 본 발명에 관하여 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail.
올레핀계 중합체Olefin polymer
본 발명의 일 구현예에 따라서, (1) 밀도가 0.9~0.95 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 55 mN 이상; 및 (5) 최대 가공 속도가 550 ㎜/s 이상인 올레핀계 중합체가 제공된다.According to one embodiment of the present invention, (1) the density is 0.9 ~ 0.95 g / ㎤; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt flow rate (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) an olefinic polymer having a maximum processing speed of 550 mm/s or more.
본 발명의 구체예에서, 올레핀계 중합체는 (1) 밀도가 0.915~0.945 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60 mN 이상; 및 (5) 최대 가공 속도가 570 ㎜/s 이상일 수 있다.In an embodiment of the present invention, the olefin-based polymer has (1) a density of 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 570 mm/s or more.
본 발명의 바람직한 구체예에서, 올레핀계 중합체는 (1) 올레핀계 중합체의 밀도가 0.915~0.942 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수가 0.5~3.5 g/10분; (3) MFR이 20~50; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60~100 mN; 및 (5) 최대 가공 속도가 570~800 ㎜/s일 수 있다.In a preferred embodiment of the present invention, the olefin-based polymer comprises (1) a density of the olefin-based polymer of 0.915 to 0.942 g/cm 3 ; (2) a melt index of 0.5 to 3.5 g/10 min, measured at 190°C with a load of 2.16 kg; (3) an MFR of 20 to 50; (4) a melt tension of 60-100 mN at a processing speed of 350 mm/s; and (5) the maximum processing speed may be 570 to 800 mm/s.
본 발명의 구체예에서, 올레핀계 중합체는 밀도가 0.9~0.95 g/㎤이다. 바람직하게는, 올레핀계 중합체의 밀도가 0.91~0.945 g/㎤, 0.915~0.945 g/㎤, 0.91~0.93 g/㎤, 0.915~0.942 g/㎤ 또는 0.915~0.925 g/㎤일 수 있다.In an embodiment of the present invention, the olefinic polymer has a density of 0.9-0.95 g/cm 3 . Preferably, the density of the olefin-based polymer may be 0.91 to 0.945 g/cm 3 , 0.915 to 0.945 g/cm 3 , 0.91 to 0.93 g/cm 3 , 0.915 to 0.942 g/cm 3 or 0.915 to 0.925 g/cm 3 .
본 발명의 구체예에서, 올레핀계 중합체는 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분이다. 바람직하게는, 190℃에서 2.16 kg 하중으로 측정되는 올레핀계 중합체의 용융지수가 0.3~4.0 g/10분, 0.5~3.5 g/10분 또는 0.5~3.0 g/10분일 수 있다.In an embodiment of the present invention, the olefin-based polymer has a melt index (I 2.16 ) of 0.1 to 5.0 g/10 min, measured at 190° C. under a load of 2.16 kg. Preferably, the melt index of the olefin-based polymer measured at 190° C. under a load of 2.16 kg may be 0.3 to 4.0 g/10 min, 0.5 to 3.5 g/10 min, or 0.5 to 3.0 g/10 min.
본 발명의 구체예에서, 올레핀계 중합체는 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상이다. 바람직하게는, 올레핀계 중합체의 MFR이 22 이상 또는 20~50일 수 있다.In an embodiment of the present invention, the olefin-based polymer has a melt flow ratio (MFR) of a melt index (I 21.6 ) measured at 190° C. under a load of 21.6 kg and a melt index (I 2.16 ) measured at a load of 2.16 kg more than 20 Preferably, the MFR of the olefin-based polymer may be 22 or more or 20-50.
본 발명의 구체예에서, 올레핀계 중합체는 350 ㎜/s의 가공 속도에서 용융장력(melt tension)이 55 mN 이상이다. 바람직하게는, 350 ㎜/s의 가공 속도에서 올레핀계 중합체의 용융장력이 60 mN 이상 또는 60~100 mN일 수 있다. 용융장력은 올레핀계 중합체의 용융강도(melt strength)를 나타내는 척도로서, 용융장력이 높을수록 올레핀 중합체로 블로운(blown) 필름 제조 시 필름이 흔들리지 않고 형상을 유지하는 특성인 버블 안정성이 우수하다.In an embodiment of the present invention, the olefinic polymer has a melt tension of at least 55 mN at a processing speed of 350 mm/s. Preferably, the melt tension of the olefin-based polymer at a processing speed of 350 mm/s may be 60 mN or more or 60-100 mN. Melt strength is a measure of the melt strength of an olefin-based polymer, and the higher the melt strength, the better the bubble stability, which is a property of maintaining the shape of the film without shaking when manufacturing a blown film with the olefin polymer.
본 발명의 구체예에서, 올레핀계 중합체는 최대 가공 속도(velocity at break)가 550 ㎜/s 이상이다. 바람직하게는, 올레핀계 중합체의 최대 가공 속도가 570 ㎜/s 이상 또는 570~800 ㎜/s일 수 있다. 최대 가공 속도가 높을수록 필름 압출 가공 선속도를 증가시킬 수 있어 필름 생산량을 높일 수 있다.In an embodiment of the invention, the olefinic polymer has a velocity at break of at least 550 mm/s. Preferably, the maximum processing speed of the olefin-based polymer may be 570 mm/s or more or 570 to 800 mm/s. The higher the maximum processing speed, the higher the film extrusion processing linear speed can be, thereby increasing the film production.
본 발명의 구현예에 따른 올레핀계 중합체는 아래 화학식 1로 표시되는 적어도 1종의 제1 전이금속 화합물; 및 아래 화학식 2로 표시되는 화합물과 아래 화학식 3으로 표시되는 화합물 중에서 선택되는 적어도 1종의 제2 전이금속 화합물을 포함하는 혼성 촉매의 존재하에 올레핀계 단량체를 중합하여 제조된다.The olefin-based polymer according to an embodiment of the present invention includes at least one first transition metal compound represented by Formula 1 below; And it is prepared by polymerizing an olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by Formula 2 below and the compound represented by Formula 3 below.
[화학식 1][Formula 1]
Figure PCTKR2021018071-appb-img-000011
Figure PCTKR2021018071-appb-img-000011
[화학식 2][Formula 2]
Figure PCTKR2021018071-appb-img-000012
Figure PCTKR2021018071-appb-img-000012
[화학식 3][Formula 3]
Figure PCTKR2021018071-appb-img-000013
Figure PCTKR2021018071-appb-img-000013
위 화학식 1 내지 화학식 3에서, M1과 M2는 서로 다르면서 각각 독립적으로 티타늄(Ti), 지르코늄(Zr) 또는 하프늄(Hf)이다. 구체적으로, M1과 M2는 서로 다르면서 각각 지르코늄 또는 하프늄일 수 있다. 바람직하게는, M1이 하프늄이고, M2가 지르코늄일 수 있다.In Formulas 1 to 3, M 1 and M 2 are different from each other and each independently represent titanium (Ti), zirconium (Zr), or hafnium (Hf). Specifically, M 1 and M 2 may be different from each other and may be zirconium or hafnium, respectively. Preferably, M 1 may be hafnium and M 2 may be zirconium.
X는 각각 독립적으로 할로겐, C1-20 알킬, C2-20 알케닐, C2-20 알키닐, C6-20 아릴, C1-20 알킬 C6-20 아릴, C6-20 아릴 C1-20 알킬, C1-20 알킬아미도 또는 C6-20 아릴아미도이다. 구체적으로, X는 각각 할로겐 또는 C1-20 알킬일 수 있다. 바람직하게는, X가 염소 또는 메틸일 수 있다.each X is independently halogen, C 1-20 alkyl, C 2-20 alkenyl, C 2-20 alkynyl, C 6-20 aryl, C 1-20 alkyl C 6-20 aryl, C 6-20 aryl C 1-20 alkyl, C 1-20 alkylamido or C 6-20 arylamido. Specifically, each X may be halogen or C 1-20 alkyl. Preferably, X may be chlorine or methyl.
R1 내지 R10은 각각 독립적으로 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C2-20 알케닐, 치환 또는 비치환된 C6-20 아릴, 치환 또는 비치환된 C1-20 알킬 C6-20 아릴, 치환 또는 비치환된 C6-20 아릴 C1-20 알킬, 치환 또는 비치환된 C1-20 헤테로알킬, 치환 또는 비치환된 C3-20 헤테로아릴, 치환 또는 비치환된 C1-20 알킬아미도, 치환 또는 비치환된 C6-20 아릴아미도, 치환 또는 비치환된 C1-20 알킬리덴, 또는 치환 또는 비치환된 C1-20 실릴이되, 여기서 R1 내지 R10은 각각 독립적으로 인접한 기가 연결되어 치환 또는 비치환된 포화 또는 불포화 C4-20 고리를 형성할 수 있다. 구체적으로, R1 내지 R10이 각각 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C1-20 알케닐, 또는 치환 또는 비치환된 C6-20 아릴일 수 있다.R 1 to R 10 are each independently hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 2-20 alkenyl, substituted or unsubstituted C 6-20 aryl, substituted or unsubstituted C 1 -20 alkyl C 6-20 aryl, substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, substituted or unsubstituted C 1-20 heteroalkyl, substituted or unsubstituted C 3-20 heteroaryl, substituted or unsubstituted C 1-20 alkylamido, substituted or unsubstituted C 6-20 arylamido, substituted or unsubstituted C 1-20 alkylidene, or substituted or unsubstituted C 1-20 silyl , where R 1 to R 10 may be each independently connected to adjacent groups to form a substituted or unsubstituted saturated or unsaturated C 4-20 ring. Specifically, R 1 to R 10 may each be hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 1-20 alkenyl, or substituted or unsubstituted C 6-20 aryl.
본 발명의 구체예에서, M1과 M2가 서로 다르면서 각각 지르코늄 또는 하프늄이고, X가 각각 할로겐 또는 C1-20 알킬이고, R1 내지 R10이 각각 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C1-20 알케닐, 또는 치환 또는 비치환된 C6-20 아릴일 수 있다.In an embodiment of the present invention, M 1 and M 2 are different from each other and each is zirconium or hafnium, X is each halogen or C 1-20 alkyl, and R 1 to R 10 may each be hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 1-20 alkenyl, or substituted or unsubstituted C 6-20 aryl.
본 발명의 바람직한 구체예에서, M1이 하프늄이고, M2가 지르코늄이고, X가 염소 또는 메틸일 수 있다.In a preferred embodiment of the present invention, M 1 may be hafnium, M 2 may be zirconium and X may be chlorine or methyl.
본 발명의 바람직한 구체예에서, 제1 전이금속 화합물이 아래 화학식 1-1 및 1-2로 표시되는 전이금속 화합물 중 적어도 하나이고, 제2 전이금속 화합물이 아래 화학식 2-1, 2-2 및 3-1로 표시되는 전이금속 화합물 중 적어도 하나일 수 있다.In a preferred embodiment of the present invention, the first transition metal compound is at least one of the transition metal compounds represented by Formulas 1-1 and 1-2 below, and the second transition metal compound is represented by Formulas 2-1, 2-2 and It may be at least one of the transition metal compounds represented by 3-1.
[화학식 1-1] [화학식 1-2][Formula 1-1] [Formula 1-2]
Figure PCTKR2021018071-appb-img-000014
Figure PCTKR2021018071-appb-img-000015
Figure PCTKR2021018071-appb-img-000014
Figure PCTKR2021018071-appb-img-000015
[화학식 2-1] [화학식 2-2] [화학식 3-1][Formula 2-1] [Formula 2-2] [Formula 3-1]
Figure PCTKR2021018071-appb-img-000016
Figure PCTKR2021018071-appb-img-000017
Figure PCTKR2021018071-appb-img-000018
Figure PCTKR2021018071-appb-img-000016
Figure PCTKR2021018071-appb-img-000017
Figure PCTKR2021018071-appb-img-000018
위 화학식에서, Me는 메틸기이다.In the above formula, Me is a methyl group.
본 발명의 구체예에서, 제1 전이금속 화합물 대 제2 전이금속 화합물의 몰 비가 100:1~1:100의 범위이다. 바람직하게는, 제1 전이금속 화합물 대 제2 전이금속 화합물의 몰 비가 50:1~1:50의 범위이다. 바람직하게는, 제1 전이금속 화합물 대 제2 전이금속 화합물의 몰 비가 10:1~1:10의 범위이다.In an embodiment of the present invention, the molar ratio of the first transition metal compound to the second transition metal compound ranges from 100:1 to 1:100. Preferably, the molar ratio of the first transition metal compound to the second transition metal compound is in the range of 50:1 to 1:50. Preferably, the molar ratio of the first transition metal compound to the second transition metal compound is in the range of 10:1 to 1:10.
본 발명의 구체예에서, 위 촉매가 아래 화학식 4로 표현되는 화합물, 화학식 5로 표현되는 화합물 및 화학식 6으로 표현되는 화합물로 구성되는 군으로부터 선택되는 적어도 1종의 조촉매 화합물을 포함할 수 있다.In an embodiment of the present invention, the above catalyst may include at least one cocatalyst compound selected from the group consisting of a compound represented by Formula 4 below, a compound represented by Formula 5, and a compound represented by Formula 6 below. .
[화학식 4][Formula 4]
Figure PCTKR2021018071-appb-img-000019
Figure PCTKR2021018071-appb-img-000019
위 화학식 4에서, n은 2 이상의 정수이고, Ra는 할로겐 원자, C1-20 탄화수소 또는 할로겐으로 치환된 C1-20 탄화수소일 수 있다. 구체적으로, Ra는 메틸, 에틸, n-부틸 또는 이소부틸일 수 있다.In Formula 4, n is an integer of 2 or more, and R a may be a halogen atom, a C 1-20 hydrocarbon, or a halogen-substituted C 1-20 hydrocarbon. Specifically, R a may be methyl, ethyl, n -butyl or isobutyl.
[화학식 5][Formula 5]
Figure PCTKR2021018071-appb-img-000020
Figure PCTKR2021018071-appb-img-000020
위 화학식 5에서, D는 알루미늄(Al) 또는 보론(B)이고, Rb, Rc 및 Rd는 각각 독립적으로 할로겐 원자, C1-20 탄화수소기, 할로겐으로 치환된 C1-20 탄화수소기 또는 C1-20 알콕시기이다. 구체적으로, D가 알루미늄(Al)일 때, Rb, Rc 및 Rd는 각각 독립적으로 메틸 또는 이소부틸일 수 있고, D가 보론(B)일 때, Rb, Rc 및 Rd는 각각 펜타플루오로페닐일 수 있다.In Formula 5 above, D is aluminum (Al) or boron (B), and R b , R c and R d are each independently a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen. or a C 1-20 alkoxy group. Specifically, when D is aluminum (Al), R b , R c and R d may each independently be methyl or isobutyl, and when D is boron (B), R b , R c and R d are each may be pentafluorophenyl.
[화학식 6][Formula 6]
[L-H]+[Z(A)4]- 또는 [L]+[Z(A)4]- [LH] + [Z(A) 4 ] - or [L] + [Z(A) 4 ] -
위 화학식 6에서, L은 중성 또는 양이온성 루이스 염기이고, [L-H]+ 및 [L]+는 브뢴스테드 산이며, Z는 13족 원소이고, A는 각각 독립적으로 치환 또는 비치환된 C6-20 아릴기이거나 치환 또는 비치환된 C1-20 알킬기이다. 구체적으로, [L-H]+는 디메틸아닐리늄 양이온일 수 있고, [Z(A)4]-는 [B(C6F5)4]-일 수 있으며, [L]+는 [(C6H5)3C]+일 수 있다.In the above formula (6), L is a neutral or cationic Lewis base, [LH] + and [L] + are a Bronsted acid, Z is a group 13 element, A is each independently substituted or unsubstituted C 6 It is a -20 aryl group or a substituted or unsubstituted C 1-20 alkyl group. Specifically, [LH] + may be a dimethylanilinium cation, [Z(A) 4 ] - may be [B(C 6 F 5 ) 4 ] - , [L] + may be [(C 6 H) 5 ) 3 C] + .
구체적으로, 위 화학식 4로 표시되는 화합물의 예로는 메틸알루미녹산, 에틸알루미녹산, 이소부틸알루미녹산, 부틸알루미녹산 등을 들 수 있으며, 메틸알루미녹산이 바람직하나, 이들로 제한되는 것은 아니다.Specifically, examples of the compound represented by the above formula (4) include methylaluminoxane, ethylaluminoxane, isobutylaluminoxane, butylaluminoxane, and the like, and methylaluminoxane is preferred, but is not limited thereto.
위 화학식 5로 표시되는 화합물의 예로는 트리메틸알루미늄, 트리에틸알루미늄, 트리이소부틸알루미늄, 트리프로필알루미늄, 트리부틸알루미늄, 디메틸클로로알루미늄, 트리이소프로필알루미늄, 트리-s-부틸알루미늄, 트리사이클로펜틸알루미늄, 트리펜틸알루미늄, 트리이소펜틸알루미늄, 트리헥실알루미늄, 트리옥틸알루미늄, 에틸디메틸알루미늄, 메틸디에틸알루미늄, 트리페닐알루미늄, 트리-p-톨릴알루미늄, 디메틸알루미늄메톡시드, 디메틸알루미늄에톡시드, 트리메틸보론, 트리에틸보론, 트리이소부틸보론, 트리프로필보론, 트리부틸보론 등을 들 수 있으며, 트리메틸알루미늄, 트리에틸알루미늄 및 트리이소부틸알루미늄이 바람직하나, 이들로 제한되는 것은 아니다.Examples of the compound represented by the above formula (5) include trimethylaluminum, triethylaluminum, triisobutylaluminum, tripropylaluminum, tributylaluminum, dimethylchloroaluminum, triisopropylaluminum, tri- s -butylaluminum, tricyclopentylaluminum , tripentyl aluminum, triisopentyl aluminum, trihexyl aluminum, trioctyl aluminum, ethyl dimethyl aluminum, methyldiethyl aluminum, triphenyl aluminum, tri- p -tolyl aluminum, dimethyl aluminum methoxide, dimethyl aluminum ethoxide, trimethyl boron, triethylboron, triisobutylboron, tripropylboron, tributylboron, and the like, and trimethylaluminum, triethylaluminum and triisobutylaluminum are preferred, but are not limited thereto.
위 화학식 6으로 표시되는 화합물의 예로는 트리에틸암모니움테트라페닐보론, 트리부틸암모니움테트라페닐보론, 트리메틸암모니움테트라페닐보론, 트리프로필암모니움테트라페닐보론, 트리메틸암모니움테트라(p-톨릴)보론, 트리메틸암모니움테트라(o,p-디메틸페닐)보론, 트리부틸암모니움테트라(p-트리플로로메틸페닐)보론, 트리메틸암모니움테트라(p-트리플로로메틸페닐)보론, 트리부틸암모니움테트라펜타플로로페닐보론, N,N-디에틸아닐리니움테트라페닐보론, N,N-디에틸아닐리니움테트라펜타플로로페닐보론, 디에틸암모니움테트라펜타플로로페닐보론, 트리페닐포스포늄테트라페닐보론, 트리메틸포스포늄테트라페닐보론, 트리에틸암모니움테트라페닐알루미늄, 트리부틸암모니움테트라페닐알루미늄, 트리메틸암모니움테트라페닐알루미늄, 트리프로필암모니움테트라페닐알루미늄, 트리메틸암모니움테트라(p-톨릴)알루미늄, 트리프로필암모니움테트라(p-톨릴)알루미늄, 트리에틸암모니움테트라(o,p-디메틸페닐)알루미늄, 트리부틸암모니움테트라(p-트리플로로메틸페닐)알루미늄, 트리메틸암모니움테트라(p-트리플로로메틸페닐)알루미늄, 트리부틸암모니움테트라펜타플로로페닐알루미늄, N,N-디에틸아닐리니움테트라페닐알루미늄, N,N-디에틸아닐리니움테트라펜타플로로페닐알루미늄, 디에틸암모니움테트라펜타테트라페닐알루미늄, 트리페닐포스포늄테트라페닐알루미늄, 트리메틸포스포늄테트라페닐알루미늄, 트리프로필암모니움테트라(p-톨릴)보론, 트리에틸암모니움테트라(o,p-디메틸페닐)보론, 트리부틸암모니움테트라(p-트리플로로메틸페닐)보론, 트리페닐카보니움테트라(p-트리플로로메틸페닐)보론, 트리페닐카보니움테트라펜타플로로페닐보론 등을 들 수 있다.Examples of the compound represented by the above formula (6) include triethylammonium tetraphenylboron, tributylammonium tetraphenylboron, trimethylammonium tetraphenylboron, tripropylammonium tetraphenylboron, trimethylammonium tetra( p -tolyl) Boron, trimethylammonium tetra( o , p -dimethylphenyl)boron, tributylammonium tetra( p -trifluoromethylphenyl)boron, trimethylammonium tetra( p -trifluoromethylphenyl)boron, tributylammonium tetra Pentafluorophenyl boron, N,N-diethylanilinium tetraphenylboron, N,N-diethylaniliniumtetrapentafluorophenylboron, diethylammonium tetrapentafluorophenylboron, triphenylphosphonium Tetraphenyl boron, trimethylphosphonium tetraphenyl boron, triethylammonium tetraphenyl aluminum, tributyl ammonium tetraphenyl aluminum, trimethyl ammonium tetraphenyl aluminum, tripropyl ammonium tetraphenyl aluminum, trimethyl ammonium tetra ( p -tolyl) ) Aluminum, tripropylammonium tetra( p -tolyl)aluminum, triethylammoniumtetra( o , p -dimethylphenyl)aluminum, tributylammonium tetra( p -trifluoromethylphenyl)aluminum, trimethylammonium tetra( p -trifluoromethylphenyl)aluminum, tributylammonium tetrapentafluorophenylaluminum, N,N-diethylaniliniumtetraphenylaluminum, N,N-diethylaniliniumtetrapentafluorophenylaluminum, di Ethylammonium tetrapentatetraphenylaluminum, triphenylphosphoniumtetraphenylaluminum, trimethylphosphoniumtetraphenylaluminum, tripropylammoniumtetra( p -tolyl)boron, triethylammoniumtetra( o , p -dimethylphenyl)boron , tributylammonium tetra( p -trifluoromethylphenyl)boron, triphenylcarboniumtetra( p -trifluoromethylphenyl)boron, and triphenylcarboniumtetrapentafluorophenylboron.
본 발명의 구체예에서, 위 촉매가 전이금속 화합물, 조촉매 화합물 또는 둘 다를 담지하는 담체를 더 포함할 수 있다. 구체적으로, 담체가 전이금속 화합물과 조촉매 화합물을 모두 담지할 수 있다.In an embodiment of the present invention, the above catalyst may further include a carrier supporting a transition metal compound, a cocatalyst compound, or both. Specifically, the carrier may support both the transition metal compound and the promoter compound.
이때, 담체는 표면에 히드록시기를 함유하는 물질을 포함할 수 있으며, 바람직하게는 건조되어 표면에 수분이 제거된, 반응성이 큰 히드록시기와 실록산기를 갖는 물질이 사용될 수 있다. 예컨대, 담체는 실리카, 알루미나 및 마그네시아로 구성되는 군으로부터 선택되는 적어도 하나를 포함할 수 있다. 구체적으로, 고온에서 건조된 실리카, 실리카-알루미나, 및 실리카-마그네시아 등이 담체로서 사용될 수 있고, 이들은 통상적으로 Na2O, K2CO3, BaSO4, 및 Mg(NO3)2 등의 산화물, 탄산염, 황산염, 및 질산염 성분을 함유할 수 있다. 또한, 이들은 탄소, 제올라이트, 염화 마그네슘 등을 포함할 수도 있다. 다만, 담체가 이들로 제한되는 것은 아니며, 전이금속 화합물과 조촉매 화합물을 담지할 수 있는 것이면 특별히 제한되지 않는다.In this case, the carrier may include a material containing a hydroxyl group on the surface, preferably a material having a high reactivity hydroxyl group and a siloxane group, which is dried to remove moisture from the surface, may be used. For example, the carrier may include at least one selected from the group consisting of silica, alumina and magnesia. Specifically, silica dried at a high temperature, silica-alumina, silica-magnesia, and the like may be used as the carrier, and these are typically oxides such as Na 2 O, K 2 CO 3 , BaSO 4 , and Mg(NO 3 ) 2 . , carbonate, sulfate, and nitrate components. They may also contain carbon, zeolites, magnesium chloride, and the like. However, the carrier is not limited thereto, and is not particularly limited as long as it can support the transition metal compound and the promoter compound.
담체는 평균 입도가 10~250 ㎛일 수 있으며, 바람직하게는 평균 입도가 10~150 ㎛일 수 있고, 보다 바람직하게는 20~100 ㎛일 수 있다.The carrier may have an average particle size of 10-250 μm, preferably an average particle size of 10-150 μm, and more preferably 20-100 μm.
담체의 미세기공 부피는 0.1~10 cc/g일 수 있으며, 바람직하게는 0.5~5 cc/g일 수 있고, 보다 바람직하게는 1.0~3.0 cc/g일 수 있다.The micropore volume of the carrier may be 0.1-10 cc/g, preferably 0.5-5 cc/g, and more preferably 1.0-3.0 cc/g.
담체의 비표면적은 1~1,000 ㎡/g일 수 있으며, 바람직하게는 100~800 ㎡/g일 수 있고, 보다 바람직하게는 200~600 ㎡/g일 수 있다.The specific surface area of the carrier may be 1 to 1,000 m2/g, preferably 100 to 800 m2/g, and more preferably 200 to 600 m2/g.
본 발명의 바람직한 구체예에서, 담체가 실리카일 수 있다. 이때, 실리카는 건조 온도가 200~900℃일 수 있다. 건조 온도는 바람직하게는 300~800℃, 보다 바람직하게는 400~700℃일 수 있다. 건조 온도가 200℃ 미만일 경우에는 수분이 너무 많아서 표면의 수분과 조촉매 화합물이 반응하게 되고, 900℃를 초과하게 되면 담체의 구조가 붕괴될 수 있다.In a preferred embodiment of the present invention, the carrier may be silica. In this case, the silica may have a drying temperature of 200 to 900°C. The drying temperature may be preferably 300 to 800°C, more preferably 400 to 700°C. If the drying temperature is less than 200 ℃, there is too much moisture, the surface moisture and the cocatalyst compound react, and if it exceeds 900 ℃, the structure of the carrier may be collapsed.
건조된 실리카 내의 히드록시기의 농도는 0.1~5 mmole/g일 수 있으며, 바람직하게는 0.7~4 mmole/g일 수 있고, 보다 바람직하게는 1.0~2 mmole/g일 수 있다. 히드록시기의 농도가 0.1 mmole/g 미만이면 제1 조촉매 화합물의 담지량이 낮아지며, 5 mmole/g을 초과하면 촉매 성분이 불활성화되는 문제점이 발생할 수 있다.The concentration of hydroxyl groups in the dried silica may be 0.1-5 mmole/g, preferably 0.7-4 mmole/g, and more preferably 1.0-2 mmole/g. When the hydroxyl group concentration is less than 0.1 mmole/g, the supported amount of the first cocatalyst compound is lowered, and when it exceeds 5 mmole/g, a problem in that the catalyst component is deactivated may occur.
담체에 담지되는 전이금속 화합물의 총량은 담체 1 g을 기준으로 0.001~1 mmole일 수 있다. 전이금속 화합물과 담체의 비가 위 범위를 만족하면, 적절한 담지 촉매 활성을 나타내어 촉매의 활성 유지 및 경제성 측면에서 유리하다.The total amount of the transition metal compound supported on the carrier may be 0.001 to 1 mmole based on 1 g of the carrier. When the ratio of the transition metal compound to the carrier satisfies the above range, an appropriate supported catalyst activity is exhibited, which is advantageous in terms of maintaining the activity of the catalyst and economic feasibility.
담체에 담지되는 조촉매 화합물의 총량은 담체 1 g을 기준으로 2~15 mmole일 수 있다. 조촉매 화합물과 담체의 비가 위 범위를 만족하면, 촉매의 활성 유지 및 경제성 측면에서 유리하다.The total amount of the promoter compound supported on the carrier may be 2 to 15 mmole based on 1 g of the carrier. When the ratio of the promoter compound and the carrier satisfies the above range, it is advantageous in terms of maintaining the activity of the catalyst and economic feasibility.
담체는 1종 또는 2종 이상이 사용될 수 있다. 예를 들어, 1종의 담체에 전이금속 화합물과 조촉매 화합물이 모두 담지될 수도 있고, 2종 이상의 담체에 전이금속 화합물과 조촉매 화합물이 각각 담지될 수도 있다. 또한, 전이금속 화합물과 조촉매 화합물 중 하나만이 담체에 담지될 수도 있다.One type or two or more types of carriers may be used. For example, both the transition metal compound and the promoter compound may be supported on one type of support, or the transition metal compound and the promoter compound may be supported on two or more types of support, respectively. In addition, only one of the transition metal compound and the promoter compound may be supported on the carrier.
올레핀 중합용 촉매에 사용될 수 있는 전이금속 화합물 및/또는 조촉매 화합물을 담지하는 방법으로서, 물리적 흡착 방법 또는 화학적 흡착 방법이 사용될 수 있다.As a method of supporting a transition metal compound and/or a cocatalyst compound that can be used in a catalyst for olefin polymerization, a physical adsorption method or a chemical adsorption method may be used.
예를 들어, 물리적 흡착 방법은 전이금속 화합물이 용해된 용액을 담체에 접촉시킨 후 건조하는 방법, 전이금속 화합물과 조촉매 화합물이 용해된 용액을 담체에 접촉시킨 후 건조하는 방법, 또는 전이금속 화합물이 용해된 용액을 담체에 접촉시킨 후 건조하여 전이금속 화합물이 담지된 담체를 제조하고, 이와 별개로 조촉매 화합물이 용해된 용액을 담체에 접촉시킨 후 건조하여 조촉매 화합물이 담지된 담체를 제조한 후, 이들을 혼합하는 방법 등일 수 있다.For example, the physical adsorption method is a method of drying a solution in which a transition metal compound is dissolved in contact with a carrier, a method in which a solution in which a transition metal compound and a cocatalyst compound are dissolved, is contacted with a carrier and then drying, or a transition metal compound The dissolved solution was brought into contact with the carrier and dried to prepare a carrier on which the transition metal compound was supported. Separately, the solution in which the cocatalyst compound was dissolved was contacted with the carrier and dried to prepare a carrier on which the cocatalyst compound was supported. After that, it may be a method of mixing them, or the like.
화학적 흡착 방법은 담체의 표면에 조촉매 화합물을 먼저 담지시킨 후, 조촉매 화합물에 전이금속 화합물을 담지시키는 방법, 또는 담체의 표면의 작용기(예를 들어, 실리카의 경우 실리카 표면의 히드록시기(-OH))와 촉매 화합물을 공유결합시키는 방법 등일 수 있다.The chemical adsorption method is a method in which a promoter compound is first supported on the surface of a carrier, and then a transition metal compound is supported on the promoter compound, or a functional group on the surface of the support (for example, in the case of silica, a hydroxyl group on the silica surface (-OH) )) and a method of covalently bonding the catalyst compound and the like.
본 발명의 구체예에서, 올레핀계 중합체는 올레핀계 단량체의 단독 중합체(homopolymer) 또는 올레핀계 단량체와 공단량체의 공중합체(copolymer)일 수 있다. 바람직하게는, 올레핀계 중합체가 올레핀계 단량체와 올레핀계 공단량체의 공중합체이다.In an embodiment of the present invention, the olefin-based polymer may be a homopolymer of an olefin-based monomer or a copolymer of an olefin-based monomer and a comonomer. Preferably, the olefinic polymer is a copolymer of an olefinic monomer and an olefinic comonomer.
여기서, 올레핀계 단량체는 C2-20 알파-올레핀(α-olefin), C1-20 디올레핀(diolefin), C3-20 사이클로올레핀(cycloolefin) 및 C3-20 사이클로디올레핀(cyclodiolefin)으로 구성되는 군으로부터 선택되는 적어도 하나이다.Here, the olefinic monomer is C 2-20 alpha-olefin (α-olefin), C 1-20 diolefin (diolefin), C 3-20 cycloolefin and C 3-20 cyclodiolefin. At least one selected from the group consisting of.
예를 들어, 올레핀계 단량체는 에틸렌, 프로필렌, 1-부텐, 1-펜텐, 4-메틸-1-펜텐, 1-헥센, 1-헵텐, 1-옥텐, 1-데센, 1-운데센, 1-도데센, 1-테트라데센 또는 1-헥사데센 등일 수 있고, 올레핀계 중합체는 위에서 예시된 올레핀계 단량체를 1종만 포함하는 단독 중합체이거나 2종 이상 포함하는 공중합체일 수 있다.For example, the olefinic monomer is ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1 - may be dodecene, 1-tetradecene, or 1-hexadecene, and the olefinic polymer may be a homopolymer including only one type of the olefinic monomer exemplified above, or a copolymer including two or more types.
예시적인 실시예에서, 올레핀계 중합체는 에틸렌과 C3-20 알파-올레핀이 공중합된 공중합체일 수 있다. 바람직하게는, 올레핀계 중합체가 올레핀계 단량체가 에틸렌이고 올레핀계 공단량체가 1-헥센인 선형 저밀도 폴리에틸렌일 수 있다.In an exemplary embodiment, the olefin-based polymer may be a copolymer in which ethylene and C 3-20 alpha-olefin are copolymerized. Preferably, the olefinic polymer may be a linear low density polyethylene wherein the olefinic monomer is ethylene and the olefinic comonomer is 1-hexene.
이 경우, 에틸렌의 함량은 55~99.9 중량%인 것이 바람직하고, 90~99.9 중량%인 것이 더욱 바람직하다. 알파-올레핀계 공단량체의 함량은 0.1~45 중량%가 바람 직하고, 0.1~10 중량%인 것이 더욱 바람직하다.In this case, it is preferable that the content of ethylene is 55 to 99.9 weight%, and it is more preferable that it is 90 to 99.9 weight%. The content of the alpha-olefin-based comonomer is preferably 0.1 to 45% by weight, more preferably 0.1 to 10% by weight.
올레핀계 중합체의 제조방법Method for producing an olefin-based polymer
본 발명의 일 구현예에 따라서, 아래 화학식 1로 표시되는 적어도 1종의 제1 전이금속 화합물; 및 아래 화학식 2로 표시되는 화합물과 아래 화학식 3으로 표시되는 화합물 중에서 선택되는 적어도 1종의 제2 전이금속 화합물을 포함하는 혼성 촉매의 존재하에 올레핀계 단량체를 중합하여 올레핀계 중합체를 얻는 단계를 포함하는 올레핀계 중합체의 제조방법이 제공된다.According to one embodiment of the present invention, at least one first transition metal compound represented by the following formula (1); And obtaining an olefinic polymer by polymerizing an olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by Formula 2 below and the compound represented by Formula 3 below A method for producing an olefin-based polymer is provided.
[화학식 1][Formula 1]
Figure PCTKR2021018071-appb-img-000021
Figure PCTKR2021018071-appb-img-000021
[화학식 2][Formula 2]
Figure PCTKR2021018071-appb-img-000022
Figure PCTKR2021018071-appb-img-000022
[화학식 3][Formula 3]
Figure PCTKR2021018071-appb-img-000023
Figure PCTKR2021018071-appb-img-000023
위 화학식에서, M1, M2, X 및 R1 내지 R10는 위 올레핀계 중합체 항목에서 설명한 바와 같다.In the above formula, M 1 , M 2 , X and R 1 to R 10 are the same as described in the above olefin-based polymer.
앞에서 설명한 바와 같이, 본 발명의 일 구현예에 따른 제조방법에 의해 제조되는 올레핀계 중합체는 (1) 밀도가 0.9~0.95 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 55 mN 이상; 및 (5) 최대 가공 속도가 550 ㎜/s 이상이다.As described above, the olefin-based polymer prepared by the manufacturing method according to an embodiment of the present invention has (1) a density of 0.9 to 0.95 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 550 mm/s or more.
본 발명의 구체예에서, 올레핀계 중합체는 (1) 밀도가 0.915~0.945 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60 mN 이상; 및 (5) 최대 가공 속도가 570 ㎜/s 이상일 수 있다.In an embodiment of the present invention, the olefin-based polymer has (1) a density of 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) a maximum processing speed of 570 mm/s or more.
본 발명의 바람직한 구체예에서, 올레핀계 중합체는 (1) 올레핀계 중합체의 밀도가 0.915~0.942 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수가 0.5~3.5 g/10분; (3) MFR이 20~50; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60~100 mN; 및 (5) 최대 가공 속도가 570~800 ㎜/s일 수 있다.In a preferred embodiment of the present invention, the olefin-based polymer comprises (1) a density of the olefin-based polymer of 0.915 to 0.942 g/cm 3 ; (2) a melt index of 0.5 to 3.5 g/10 min, measured at 190°C with a load of 2.16 kg; (3) an MFR of 20 to 50; (4) a melt tension of 60-100 mN at a processing speed of 350 mm/s; and (5) the maximum processing speed may be 570 to 800 mm/s.
본 발명의 구체예에서, 올레핀계 중합체는, 예를 들어 자유 라디칼(free radical), 양이온(cationic), 배위(coordination), 축합(condensation), 첨가(addition) 등의 중합반응에 의해 중합될 수 있으나, 이들로 제한되는 것은 아니다.In an embodiment of the present invention, the olefin-based polymer may be polymerized by, for example, a polymerization reaction such as free radical, cationic, coordination, condensation, and addition. However, it is not limited thereto.
본 발명의 일 실시예로서, 올레핀계 중합체는 기상 중합법, 용액 중합법 또는 슬러리 중합법 등으로 제조될 수 있다. 바람직하게는, 올레핀계 단량체의 중합이 기상 중합으로 수행될 수 있으며, 구체적으로 올레핀계 단량체의 중합이 기상 유동층 반응기 내에서 수행될 수 있다.As an embodiment of the present invention, the olefin-based polymer may be prepared by a gas phase polymerization method, a solution polymerization method, or a slurry polymerization method. Preferably, the polymerization of the olefinic monomer may be carried out by gas phase polymerization, and specifically, the polymerization of the olefinic monomer may be carried out in a gas phase fluidized bed reactor.
올레핀계 중합체가 용액 중합법 또는 슬러리 중합법으로 제조되는 경우, 사용될 수 있는 용매의 예로서, 펜탄, 헥산, 헵탄, 노난, 데칸 및 이들의 이성질체와 같은 C5-12 지방족 탄화수소 용매; 톨루엔, 벤젠과 같은 방향족 탄화수소 용매; 디클로로메탄, 클로로벤젠과 같은 염소 원자로 치환된 탄화수소 용매; 및 이들의 혼합물 등을 들 수 있으나, 이들로 제한되는 것은 아니다.When the olefin-based polymer is prepared by the solution polymerization method or the slurry polymerization method, examples of the solvent that can be used include a C 5-12 aliphatic hydrocarbon solvent such as pentane, hexane, heptane, nonane, decane and isomers thereof; aromatic hydrocarbon solvents such as toluene and benzene; hydrocarbon solvents substituted with chlorine atoms such as dichloromethane and chlorobenzene; and mixtures thereof, but is not limited thereto.
실시예Example
이하, 실시예를 통하여 본 발명을 보다 구체적으로 설명한다. 단, 아래의 실시예는 본 발명을 예시하기 위한 것일 뿐이며, 본 발명의 범위가 이들만으로 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail through examples. However, the following examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.
제조예production example
화학식 1-1의 전이금속 화합물(bis(n-propylcyclopentadienyl) hafnium dichloride)과 화학식 2-1의 전이금속 화합물(bis(n-butylcyclopentadienyl) zirconium dichloride)는 TCI에서 구매하여, 추가 정제 과정 없이 사용하였다.The transition metal compound of Formula 1-1 (bis(n-propylcyclopentadienyl) hafnium dichloride) and the transition metal compound of Formula 2-1 (bis(n-butylcyclopentadienyl) zirconium dichloride) were purchased from TCI and used without further purification.
화학식 1-1의 전이금속 화합물 4.47 g과 화학식 2-1의 전이금속 화합물 1.67 g에 10% 메틸알루미녹산의 톨루엔 용액 892 g을 투입하여 상온에서 1시간 교반하였다. 반응이 끝난 용액을 200 g의 실리카(XPO-2402)에 투입하고, 추가로 1.5 리터의 톨루엔을 넣어 70℃에서 2시간 교반하였다. 담지가 끝난 촉매를 500 ㎖의 톨루엔으로 세척하고, 60℃ 진공에서 밤새 건조시켜 분말 형태의 담지 촉매 280 g을 얻었다.892 g of a 10% methylaluminoxane toluene solution was added to 4.47 g of the transition metal compound of Formula 1-1 and 1.67 g of the transition metal compound of Formula 2-1, followed by stirring at room temperature for 1 hour. The reaction solution was added to 200 g of silica (XPO-2402), and further 1.5 liters of toluene was added, followed by stirring at 70° C. for 2 hours. The supported catalyst was washed with 500 ml of toluene and dried overnight in a vacuum at 60° C. to obtain 280 g of a supported catalyst in powder form.
실시예Example 1~2 1-2
기상 유동층 반응기를 이용하여 제조예 1에서 얻어진 담지 촉매의 존재하에 에틸렌/1-헥센 공중합체를 제조하였다. 반응기의 에틸렌 분압을 약 15 kg/㎠로 유지하였고, 중합 온도를 70~90℃로 유지하였다.An ethylene/1-hexene copolymer was prepared in the presence of the supported catalyst obtained in Preparation Example 1 using a gas phase fluidized bed reactor. The partial pressure of ethylene in the reactor was maintained at about 15 kg/cm 2 , and the polymerization temperature was maintained at 70-90°C.
위 실시예의 중합 조건을 아래 표 1에 나타내었다.The polymerization conditions of the above examples are shown in Table 1 below.
　 실시예 1Example 1 실시예 2Example 2
중합온도(℃)Polymerization temperature (℃) 75.475.4 80.980.9
촉매 주입량(g/h)Catalyst injection amount (g/h) 2.02.0 1.41.4
수소 주입량(g/h)Hydrogen injection amount (g/h) 2.222.22 2.342.34
1-헥센 주입량(kg/h)1-Hexene Injection (kg/h) 1.601.60 1.631.63
수소/에틸렌 농도(%) 비Hydrogen/Ethylene Concentration (%) Ratio 0.0470.047 0.0480.048
1-헥센/에틸렌 농도(%) 비1-Hexene/Ethylene Concentration (%) Ratio 2.0962.096 1.9931.993
비교예comparative example 1 One
비교를 위해 Dow의 DOWLEX 2045G(밀도 0.9200 g/㎤, 용융지수 1.0 g/10분)을 사용하였다.For comparison, Dow's DOWLEX 2045G (density 0.9200 g/cm 3 , melt index 1.0 g/10 min) was used.
시험예test example
위 실시예의 올레핀계 중합체의 물성을 아래와 같은 방법 및 기준에 따라서 측정하였다. 그 결과를 아래 표 2에 나타내었다.The physical properties of the olefin-based polymer of the above example were measured according to the following methods and standards. The results are shown in Table 2 below.
(1) 밀도(density)(1) density
ASTM D1505에 의거하여 측정하였다.It was measured according to ASTM D1505.
(2) 용융지수(melt index) 및 용융지수비(melt flow ratio; MFR)(2) melt index and melt flow ratio (MFR)
ASTM D 1238에 의거하여 190℃에서 21.6 kg의 하중과 2.16 kg의 하중으로 각각 용융지수를 측정하고, 그 비(MI21.6/MI2.16)를 구하였다.According to ASTM D 1238, the melt index was measured at 190°C under a load of 21.6 kg and a load of 2.16 kg, and the ratio (MI 21.6 /MI 2.16 ) was obtained.
(3) 용융강도(3) melt strength
길이 30 ㎜, 직경 2 ㎜, 전단 속도 72/s의 캐필러리(capillary) 및/또는 초기 속도 18 ㎜/s, 가속도 12 ㎜/s2의 휠(wheel)을 통해 용융장력과 최대 가공 속도를 측정하였다.Melt tension and maximum machining speed were measured through a capillary with a length of 30 mm, a diameter of 2 mm, a shear rate of 72/s and/or a wheel with an initial rate of 18 mm/s and an acceleration of 12 mm/s 2 . measured.
단위unit 실시예 1Example 1 실시예 2Example 2 비교예 1Comparative Example 1
MI2.16 MI 2.16 g/10분g/10 min 0.940.94 0.940.94 1.071.07
MI21.16 MI 21.16 g/10분g/10 min 22.222.2 21.021.0 30.930.9
MFRMFR -- 23.623.6 22.322.3 28.928.9
밀도density g/㎤g/cm3 0.91880.9188 0.92000.9200 0.92000.9200
용융장력
(350 ㎜/s)melt tension
(350 mm/s) 		mNmN 61.661.6 62.362.3 51.851.8
최대 가공 속도maximum machining speed ㎜/smm/s 580580 572572 524524
위 표 2 및 도 1로부터 확인되는 바와 같이, 본 발명의 구체예에 따른 올레핀계 중합체는 용융장력 및 최대 가공 속도로 대변되는 용융강도가 우수하여 블로운 필름 성형 시 버블 안정성이 뛰어나다.As can be seen from Table 2 and FIG. 1 above, the olefin-based polymer according to an embodiment of the present invention has excellent melt strength represented by melt tension and maximum processing speed, and thus has excellent bubble stability during blown film molding.
따라서, 본 발명은 용융강도가 우수한 올레핀계 중합체를 제공할 수 있다.Accordingly, the present invention can provide an olefin-based polymer having excellent melt strength.

Claims (16)

  1. (1) 밀도가 0.9~0.95 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 55 mN 이상; 및 (5) 최대 가공 속도가 550 ㎜/s 이상인 올레핀계 중합체.(1) a density of 0.9 to 0.95 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) an olefinic polymer having a maximum processing speed of 550 mm/s or more.
  2. 제1항에 있어서, (1) 밀도가 0.915~0.945 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 60 mN 이상; 및 (5) 최대 가공 속도가 570 ㎜/s 이상인 올레핀계 중합체.The method according to claim 1, wherein (1) the density is 0.915 to 0.945 g/cm 3 ; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio ( MFR ) of 20 or more; (4) a melt tension of 60 mN or more at a processing speed of 350 mm/s; and (5) an olefinic polymer having a maximum processing speed of 570 mm/s or more.
  3. 제1항에 있어서, 아래 화학식 1로 표시되는 적어도 1종의 제1 전이금속 화합물; 및 아래 화학식 2로 표시되는 화합물과 아래 화학식 3으로 표시되는 화합물 중에서 선택되는 적어도 1종의 제2 전이금속 화합물을 포함하는 혼성 촉매의 존재하에 올레핀계 단량체를 중합하여 제조되는 올레핀계 중합체:According to claim 1, at least one first transition metal compound represented by the following formula (1); And an olefin-based polymer prepared by polymerizing an olefin-based monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from a compound represented by Formula 2 below and a compound represented by Formula 3 below:
    [화학식 1][Formula 1]
    Figure PCTKR2021018071-appb-img-000024
    Figure PCTKR2021018071-appb-img-000024
    [화학식 2][Formula 2]
    Figure PCTKR2021018071-appb-img-000025
    Figure PCTKR2021018071-appb-img-000025
    [화학식 3][Formula 3]
    Figure PCTKR2021018071-appb-img-000026
    Figure PCTKR2021018071-appb-img-000026
    위 화학식 1 내지 화학식 3에서, M1과 M2는 서로 다르면서 각각 독립적으로 티타늄(Ti), 지르코늄(Zr) 또는 하프늄(Hf)이고,In Chemical Formulas 1 to 3, M 1 and M 2 are different and each independently titanium (Ti), zirconium (Zr) or hafnium (Hf),
    X는 각각 독립적으로 할로겐, C1-20 알킬, C2-20 알케닐, C2-20 알키닐, C6-20 아릴, C1-20 알킬 C6-20 아릴, C6-20 아릴 C1-20 알킬, C1-20 알킬아미도 또는 C6-20 아릴아미도이고,each X is independently halogen, C 1-20 alkyl, C 2-20 alkenyl, C 2-20 alkynyl, C 6-20 aryl, C 1-20 alkyl C 6-20 aryl, C 6-20 aryl C 1-20 alkyl, C 1-20 alkylamido or C 6-20 arylamido;
    R1 내지 R10은 각각 독립적으로 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C2-20 알케닐, 치환 또는 비치환된 C6-20 아릴, 치환 또는 비치환된 C1-20 알킬 C6-20 아릴, 치환 또는 비치환된 C6-20 아릴 C1-20 알킬, 치환 또는 비치환된 C1-20 헤테로알킬, 치환 또는 비치환된 C3-20 헤테로아릴, 치환 또는 비치환된 C1-20 알킬아미도, 치환 또는 비치환된 C6-20 아릴아미도, 치환 또는 비치환된 C1-20 알킬리덴, 또는 치환 또는 비치환된 C1-20 실릴이되, R1 내지 R10은 각각 독립적으로 인접한 기가 연결되어 치환 또는 비치환된 포화 또는 불포화 C4-20 고리를 형성할 수 있다.R 1 to R 10 are each independently hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 2-20 alkenyl, substituted or unsubstituted C 6-20 aryl, substituted or unsubstituted C 1 -20 alkyl C 6-20 aryl, substituted or unsubstituted C 6-20 aryl C 1-20 alkyl, substituted or unsubstituted C 1-20 heteroalkyl, substituted or unsubstituted C 3-20 heteroaryl, substituted or unsubstituted C 1-20 alkylamido, substituted or unsubstituted C 6-20 arylamido, substituted or unsubstituted C 1-20 alkylidene, or substituted or unsubstituted C 1-20 silyl , R 1 to R 10 may be each independently connected to adjacent groups to form a substituted or unsubstituted saturated or unsaturated C 4-20 ring.
  4. 제3항에 있어서, M1과 M2가 서로 다르면서 각각 지르코늄 또는 하프늄이고, X가 각각 할로겐 또는 C1-20 알킬이고, R1 내지 R10이 각각 수소, 치환 또는 비치환된 C1-20 알킬, 치환 또는 비치환된 C1-20 알케닐, 또는 치환 또는 비치환된 C6-20 아릴인, 올레핀계 중합체.4. The method according to claim 3, wherein M 1 and M 2 are different from each other and each is zirconium or hafnium, X is each halogen or C 1-20 alkyl, and R 1 to R 10 are each hydrogen, substituted or unsubstituted C 1-20 alkyl, substituted or unsubstituted C 1-20 alkenyl, or substituted or unsubstituted C 6-20 aryl.
  5. 제4항에 있어서, M1이 하프늄이고, M2가 지르코늄이고, X가 염소 또는 메틸인, 올레핀계 중합체.5. The olefinic polymer of claim 4, wherein M 1 is hafnium, M 2 is zirconium, and X is chlorine or methyl.
  6. 제3항에 있어서, 제1 전이금속 화합물이 아래 화학식 1-1 및 1-2로 표시되는 전이금속 화합물 중 적어도 하나이고, 제2 전이금속 화합물이 아래 화학식 2-1, 2-2 및 3-1로 표시되는 전이금속 화합물 중 적어도 하나인, 올레핀계 중합체.The method according to claim 3, wherein the first transition metal compound is at least one of the transition metal compounds represented by the following Chemical Formulas 1-1 and 1-2, and the second transition metal compound is the following Chemical Formulas 2-1, 2-2 and 3- At least one of the transition metal compounds represented by 1, an olefin-based polymer.
    [화학식 1-1] [화학식 1-2][Formula 1-1] [Formula 1-2]
    Figure PCTKR2021018071-appb-img-000027
    Figure PCTKR2021018071-appb-img-000028
    Figure PCTKR2021018071-appb-img-000027
    Figure PCTKR2021018071-appb-img-000028
    [화학식 2-1] [화학식 2-2] [화학식 3-1][Formula 2-1] [Formula 2-2] [Formula 3-1]
    Figure PCTKR2021018071-appb-img-000029
    Figure PCTKR2021018071-appb-img-000030
    Figure PCTKR2021018071-appb-img-000031
    Figure PCTKR2021018071-appb-img-000029
    Figure PCTKR2021018071-appb-img-000030
    Figure PCTKR2021018071-appb-img-000031
    위 화학식에서, Me는 메틸기이다.In the above formula, Me is a methyl group.
  7. 제3항에 있어서, 제1 전이금속 화합물 대 제2 전이금속 화합물의 몰 비가 100:1~1:100의 범위인, 올레핀계 중합체.4. The olefinic polymer of claim 3, wherein the molar ratio of the first transition metal compound to the second transition metal compound is in the range of 100:1 to 1:100.
  8. 제3항에 있어서, 촉매가 아래 화학식 4로 표현되는 화합물, 화학식 5로 표현되는 화합물 및 화학식 6으로 표현되는 화합물로 구성되는 군으로부터 선택되는 적어도 1종의 조촉매 화합물을 포함하는, 올레핀계 중합체.The olefin-based polymer according to claim 3, wherein the catalyst comprises at least one cocatalyst compound selected from the group consisting of a compound represented by the following Chemical Formula 4, a compound represented by Chemical Formula 5, and a compound represented by Chemical Formula 6 .
    [화학식 4][Formula 4]
    Figure PCTKR2021018071-appb-img-000032
    Figure PCTKR2021018071-appb-img-000032
    [화학식 5][Formula 5]
    Figure PCTKR2021018071-appb-img-000033
    Figure PCTKR2021018071-appb-img-000033
    [화학식 6][Formula 6]
    [L-H]+[Z(A)4]- 또는 [L]+[Z(A)4]- [LH] + [Z(A) 4 ] - or [L] + [Z(A) 4 ] -
    위 화학식 4에서, n은 2 이상의 정수이고, Ra는 할로겐 원자, C1-20 탄화수소기 또는 할로겐으로 치환된 C1-20 탄화수소기이고,In the above formula (4), n is an integer of 2 or more, R a is a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen,
    위 화학식 5에서, D는 알루미늄(Al) 또는 보론(B)이고, Rb, Rc 및 Rd는 각각 독립적으로 할로겐 원자, C1-20 탄화수소기, 할로겐으로 치환된 C1-20 탄화수소기 또는 C1-20 알콕시기이며,In Formula 5 above, D is aluminum (Al) or boron (B), and R b , R c and R d are each independently a halogen atom, a C 1-20 hydrocarbon group, or a C 1-20 hydrocarbon group substituted with a halogen. Or a C 1-20 alkoxy group,
    위 화학식 6에서, L은 중성 또는 양이온성 루이스 염기이고, [L-H]+ 및 [L]+는 브뢴스테드 산이며, Z는 13족 원소이고, A는 각각 독립적으로 치환 또는 비치환된 C6-20 아릴기이거나 치환 또는 비치환된 C1-20 알킬기이다.In the above formula (6), L is a neutral or cationic Lewis base, [LH] + and [L] + are a Bronsted acid, Z is a group 13 element, A is each independently substituted or unsubstituted C 6 It is a -20 aryl group or a substituted or unsubstituted C 1-20 alkyl group.
  9. 제8항에 있어서, 촉매가 전이금속 화합물, 조촉매 화합물 또는 둘 다를 담지하는 담체를 더 포함하는, 올레핀계 중합체.The olefinic polymer according to claim 8, wherein the catalyst further comprises a carrier supporting a transition metal compound, a cocatalyst compound, or both.
  10. 제9항에 있어서, 담체가 실리카, 알루미나 및 마그네시아로 구성되는 군으로부터 선택되는 적어도 하나를 포함하는, 올레핀계 중합체.10. The olefinic polymer of claim 9, wherein the carrier comprises at least one selected from the group consisting of silica, alumina and magnesia.
  11. 제9항에 있어서, 담체에 담지되는 혼성 전이금속 화합물의 총량이 담체 1 g을 기준으로 0.001~1 mmole이고, 담체에 담지되는 조촉매 화합물의 총량이 담체 1 g을 기준으로 2~15 mmole인, 올레핀계 중합체.10. The method according to claim 9, wherein the total amount of the hybrid transition metal compound supported on the carrier is 0.001 to 1 mmole based on 1 g of the carrier, and the total amount of the promoter compound supported on the carrier is 2 to 15 mmole based on 1 g of the carrier. , olefinic polymers.
  12. 제1항에 있어서, 올레핀계 중합체가 올레핀계 단량체와 올레핀계 공단량체의 공중합체인 올레핀계 중합체.The olefinic polymer according to claim 1, wherein the olefinic polymer is a copolymer of an olefinic monomer and an olefinic comonomer.
  13. 제12항에 있어서, 올레핀계 단량체가 에틸렌이고, 올레핀계 공단량체가 프로필렌, 1-부텐, 1-펜텐, 4-메틸-1-펜텐, 1-헥센, 1-헵텐, 1-옥텐, 1-데센, 1-운데센, 1-도데센, 1-테트라데센 및 1-헥사데센으로 구성되는 군으로부터 선택되는 하나 이상인 올레핀계 중합체.13. The method of claim 12, wherein the olefinic monomer is ethylene and the olefinic comonomer is propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1- At least one olefinic polymer selected from the group consisting of decene, 1-undecene, 1-dodecene, 1-tetradecene and 1-hexadecene.
  14. 제13항에 있어서, 올레핀계 중합체가 올레핀계 단량체가 에틸렌이고 올레핀계 공단량체가 1-헥센인 선형 저밀도 폴리에틸렌인 올레핀계 중합체.14. The olefinic polymer of claim 13, wherein the olefinic polymer is a linear low density polyethylene wherein the olefinic monomer is ethylene and the olefinic comonomer is 1-hexene.
  15. 아래 화학식 1로 표시되는 적어도 1종의 제1 전이금속 화합물; 및 아래 화학식 2로 표시되는 화합물과 아래 화학식 3으로 표시되는 화합물 중에서 선택되는 적어도 1종의 제2 전이금속 화합물을 포함하는 혼성 촉매의 존재하에 올레핀계 단량체를 중합하여 올레핀계 중합체를 얻는 단계를 포함하되, 올레핀계 중합체의 (1) 밀도가 0.9~0.95 g/㎤; (2) 190℃에서 2.16 kg 하중으로 측정되는 용융지수(I2.16)가 0.1~5.0 g/10분; (3) 190℃에서 21.6 kg의 하중으로 측정되는 용융지수(I21.6)와 2.16 kg 하중으로 측정되는 용융지수(I2.16)의 비(melt flow ratio; MFR)가 20 이상; (4) 350 ㎜/s의 가공 속도에서 용융장력이 55 mN 이상; 및 (5) 최대 가공 속도가 550 ㎜/s 이상인 올레핀계 중합체의 제조방법:At least one first transition metal compound represented by Formula 1 below; And obtaining an olefinic polymer by polymerizing an olefinic monomer in the presence of a hybrid catalyst comprising at least one second transition metal compound selected from the compound represented by Formula 2 below and the compound represented by Formula 3 below However, (1) the density of the olefin-based polymer is 0.9 ~ 0.95 g / ㎤; (2) Melt index (I 2.16 ) measured at 190°C under a load of 2.16 kg is 0.1 to 5.0 g/10 min; (3) a melt flow ratio (MFR) of 20 or more at 190°C with a melt flow rate (I 21.6 ) measured under a load of 21.6 kg and a melt index (I 2.16 ) measured under a load of 2.16 kg; (4) a melt tension of 55 mN or more at a processing speed of 350 mm/s; and (5) a method for producing an olefin-based polymer having a maximum processing speed of 550 mm/s or more:
    [화학식 1][Formula 1]
    Figure PCTKR2021018071-appb-img-000034
    Figure PCTKR2021018071-appb-img-000034
    [화학식 2][Formula 2]
    Figure PCTKR2021018071-appb-img-000035
    Figure PCTKR2021018071-appb-img-000035
    [화학식 3][Formula 3]
    Figure PCTKR2021018071-appb-img-000036
    Figure PCTKR2021018071-appb-img-000036
    위 화학식에서 M1, M2, X 및 R1 내지 R10은 제3항에서 정의한 바와 같다.In the above formula, M 1 , M 2 , X and R 1 to R 10 are as defined in claim 3.
  16. 제15항에 있어서, 올레핀계 단량체의 중합이 기상 중합으로 수행되는, 올레핀계 중합체의 제조방법.The method for producing an olefin-based polymer according to claim 15, wherein the polymerization of the olefin-based monomer is carried out by gas phase polymerization.
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